The correct input-output waveforms of Frequency detector:

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11a.png"><img alt="Input-output waveforms of Frequency detector - option a" class="alignnone size-full wp-image-162033" height="208" sizes="(max-width: 415px) 100vw, 415px" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11a.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11a.png 415w, https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11a-300x150.png 300w" width="415"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11b.png"><img alt="Input-output waveforms of Frequency detector - option b" class="alignnone size-full wp-image-162034" height="196" sizes="(max-width: 439px) 100vw, 439px" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11b.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11b.png 439w, https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11b-300x134.png 300w" width="439"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11c.png"><img alt="Input-output waveforms of Frequency detector - option c" class="alignnone size-full wp-image-162035" height="156" sizes="(max-width: 399px) 100vw, 399px" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11c.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11c.png 399w, https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11c-300x117.png 300w" width="399"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11d.png"><img alt="Input-output waveforms of Frequency detector - option d" class="alignnone size-full wp-image-162036" height="164" sizes="(max-width: 431px) 100vw, 431px" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11d.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11d.png 431w, https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-phase-lock-loops-q11d-300x114.png 300w" width="431"/></a>