What would be the most likely cause of the low RSSI in the hotel room?

A business traveler from North America is in Europe. The hotel only provides coverage in 2.4 GHz. The traveler connects to the hotel’s SSID and notices an AP in the hotel room.

However, the laptop reports a very low RSSI when connected. The traveler does not have the same problem when connecting in the lobby.

What would be the most likely cause of the low RSSI in the hotel room?
A . The AP in the room is using ZigBee instead of Wi-Fi.
B . The AP in the room is transmitting on channel 13 and the traveler associated to a non-channel 13 AP located elsewhere.
C . The switchport that the AP is connected to is only capable of transmitting at 10 Mbps.
D . The AP in the room is using Bluetooth instead of Wi-Fi.

Answer: C