Refer to the exhibit.

C:\>ping 192.168.3.254 Pinging 192.168.3.254 with 32 bytes of data: Reply from 192.168.3.254: bytes=32 time=3ms TTL=255 Reply from 192.168.3.254: bytes=32 time=4ms TTL=255 Reply from 192.168.3.254: bytes=32 time=3ms TTL=255 Reply from 192.168.3.254: bytes=32 time=3ms TTL=255 C:\>tracert 192.168.4.7 Tracing route to 192.158.4.7 over a maximum of 30 hops 1 Destination host unreachable. Trace complete.

A.	The routing on Router2 is not functioning properly.
B.	An access list is applied to an interface of Router3.
C.	The Fa0/24 interface of Switch1 is down.
D.	The gateway address of HostA is incorrect or not configured.