What is the likely cause of this issue?

Refer to Exhibit.

The Update Source for LCM has been configured as shown in the exhibit. Inventory is failing consistently.

What is the likely cause of this issue?
A . Port 433 Is blocked by a firewall.
B. Port 80 is blocked by a firewall.
C. The administrator does not have a valid portal account.
D. The license assigned to the cluster has expired.

Answer: A