Why is SNMPv2 used to monitor the WX platform?

Why is SNMPv2 used to monitor the WX platform?

A.
SNMPv1 is read only on WX devices.

B.
SNMPv1 is not supported by WX devices.

C.
SNMPv2 supports both 32- and 64-bit counters.

D.
SNMPv2 does put and get commands to WX devices.