If a wave is modulated by two waves. One of them has modulation index equal to 0.75 and other has 0.2, the total modulation index will be ________

If a wave is modulated by two waves. One of them has modulation index

1.	If a wave is modulated by two waves. One of them has modulation index equal to 0.75 and other has 0.2, the total modulation index will be ________
A.	0.67
B.	0.58
C.	0.77
D.	0.35
Answer» D. 0.35