which address would successfully summarize only the networks seen?

Given the network diagram, which address would successfully summarize only the networks
seen?

A.
192.168.0.0/24

B.
192.168.8.0/20

C.
192.168.8.0/21

D.
192.168.12.0/20

E.
192.168.16.0/21

F.
These networks cannot be summarized.