What does a call extension let users do that call-only ad do not?

Q. What does a call extension let users do that call-only ad do not?

A. Easily schedule a call-back from the advertiser when the line is busy

B. Easily save the number to their phone’s contact list.

C. Choose from two different numbers to call.

D. Click through to your mobile site instead of calling.

Correct Answer is:

D. Click through to your mobile site instead of calling.