Which default gateway address should be assigned to HostA?

Refer to the exhibit.

Which default gateway address should be assigned to HostA?

A.
192.168.1.1

B.
192.168.1.65

C.
192.168.1.66

D.
192.168.1.129

E.
10.1.1.1

F.
10.1.1.2

Explanation:
It should be one less than the switch IP to which it is connected so it will be B.