A user is attempting to connect to the network remotely using a laptop and dial-up. The user plugsthe cable into the only available laptop connection, but the connector is loose inside the port. TheMOST likely reason the connector is loose is the:（）

A. RJ-11 connector needs to be re-crimped
B. User has plugged into the laptop's NIC port
C. User has plugged the wrong end of the cable into the port
D. RJ-11 connector needs to be replaced with an RJ-45 connector