Please check my answer ?

Q1) A man you have a phone call on hold do you know what to do ?
a) yes,i need to pick up a phone and answer the call.
b) yes,i need to pick up the phone and hold the call.
c) yes, i need to hold the phone and work the call.
d) yes, i need to answer the phone and hold the call.

ANS) D

Q2) could you ask him to call me back later ?
a) yes, I will call you back later.
b) yes, he returned the call.
c) yes, I will ask him to return your call.
d) yes,he called you this morning.

ANS) C