______I explained on the phone,your request will be considered at the next meeting.

A.Which        B.That            C.What          D.As

_______ I explained on the phone, your request will be considered at the next meeting.

_______ I explained on the phone, your request will be considered at the next meeting.

A．When            B．After             C．As               D．Since

______ I explained on the phone, your request will be considered at the next meeting.

_____ I explained on the phone, your request will be considered at the next meeting.

A. When　　 B. After　　 C. As　　 D. Since