A user deploys 2 vApps. Each vApp has 2 VMs: VM-A1 and VM-A2 reside in vApp-A1;
VM-B1 and VM-B2 reside in vApp-B1. VM-A1 can ping VM-B1 and VM-B2 but not VM-A2.
VM-A2 can ping VM-B1 and VM-B2 but not VM-A1. Why is this occurring?

A.
vShield Edge firewall is enabled to drop all incoming packets.

B.
Guest Operating Systems in VM-A1 and VM-A2 have firewall rules to block ping packets.

C.
vShield Edge firewall is enabled but configured to drop ping packets.

D.
Guest Operating Systems in VM-A1 and VM-A2 are running Anti-Virus software.

Explanation: