Certkiller .com states that they are able to Telnet in from Host B., but cannot Telnet into the Control Station from HostA.
But Host A is in VLAN 1, Host B belongs to VLAN 2.
Both Host A and Host B are attached to the same router using separate interfaces.
The Control Station is on another router located on the opposite side of a firewall, in VLAN 5.

Name the reason why Host A is unable to Telnet in to the Control Station.

A.
Access Control List (ACL) on the router for VLAN 2 blocking Telnet Traffic (Port 23)

B.
Access Control List (ACL) on the router for VLAN 1 blocking Telnet Traffic (Port 23)

C.
Firewall is blocking inbound Telnet traffic (Port 23) to VLAN 5

D.
Access Control List (ACL) on the router for VLAN 5 blocking Telnet Traffic (Port 23)