Refer to the exhibit.

A network administrator executes this command on an ArubaOS switch, Switch-2:
Switch-2(config)# ip route 10.1.100.0/24 10.1.1.1

The administrator successfully pings Device 1 at 10.1.100.42 from Switch-2. However, Device 2 cannot ping Device 1.
The administrator confirms that Device 1 is correctly set up.

What should the administrator check on Switch-2 to resolve this issue?

A. that ARP proxy is enabled

B. that IP routing is enabled

C. that spanning tree is disabled
D. that ICMP is enabled