The slope and level detector circuit in a CRO has a delay of 100 ns. The start-stop sweep generator has a response time of 50 ns. In order to display correctly, a delay line of

• A. 150 ns has to be inserted into the y-channel
• B. 150 ns has to be inserted into the x-channel
• C. 150 ns has to be inserted into both x and y channel
• D. 100 ns has to be inserted into both x and y channel