A source of sound gives five beats per second when sounded with another source of frequency \[100\,{{s}^{-1}}\]. The second harmonic of the source together with a source of frequency \[205\,{{s}^{-1}}\] gives five beats per second. What is the frequency of the source [CBSE PMT 1995]

• A.            \[105\,{{s}^{-1}}\]   
• B.            \[205\,{{s}^{-1}}\]
• C.            \[95\,{{s}^{-1}}\]     
• D.            \[100\,{{s}^{-1}}\]