An engineer must update the configuration on two PCs in two different subnets to communicate locally with each other. One PC is configured with IP address 192.168.25.128/25 and the other with 192.168.25.100/25.
Which network mask must the engineer configure on both PCs to enable the communication?

A. 255.255.255.248
B. 255.255.255.224
C. 255.255.255.0
D. 255.255.255.252