what is the correct address book entry for host C?

See the Exhibit:

In the exhibit, what is the correct address book entry for host C?

A.
Set address partner C 1.1.70.250/32

B.
Set address partner 1.1.70.250/32

C.
Set address partner C 1.1.70.250

D.
Set address C 1.1.70.250/32