If he knows the source IP address is 192.168.4.125, how could he filter this traffic?

Steve is troubleshooting a connection problem with an internal application.

If he knows the source IP address is 192.168.4.125, how could he filter this traffic?
A . Run fw monitor -e "accept dsrc=192.168.4.125;"
B . Run fw monitor -e "accept dst=192.168.4.125;"
C . Run fw monitor -e "accept ip=192.168.4.125;"
D . Run fw monitor -e "accept src=192.168.4.125;"

Answer: D