When deploying a sensor network that uses CoAP, which of the following must be done on the firewall to allow sensor traffic into the data center?

When deploying a sensor network that uses CoAP, which of the following must be done on the firewall to allow sensor traffic into the data center?
A. Permit UDP traffic from the sensor IP address range
B. Permit IP Option 135 traffic from the sensor IP address range(S).
C. Configu re stateful inspection for ROLL.
D. Enable NAT64.