For a differentiating circuit to be effective, the RC product should be ___________ the time period of the input wave.

For a differentiating circuit to be effective, the RC product should

1.	For a differentiating circuit to be effective, the RC product should be ___________ the time period of the input wave.
A.	Equal to
B.	5 times greater than
C.	5 times smaller than
D.	At least 10 times greater than
Answer» E.