What is preventing Workstation B from reaching Server A?

Refer to the exhibit. The user at Workstation B reports that Server A cannot be reached. What is preventing Workstation B from reaching Server A?

A.
The IP address for Server A is a broadcast address.

B.
The IP address for Workstation B is a subnet address.

C.
The gateway for Workstation B is not on the same subnet.

D.
The gateway for Server A is not on the same subnet.