You detect a coverage hole in some part of the network. After troubleshooting, you find out that the Cisco 3702i AP is not using all of its transmission power, and hence is not using the 4×4 spatial stream.
Which cause of the problem is true?
A . The upstream switch is not PoE-capable.
B . The AP antennas have been damaged.
C . The AP is not 4×4-capable.
D . The PoE source is not injecting the adequate quantity of power.
Answer: D