A user submits a help desk ticket regarding a smartphone that will no longer accept its charging cable. The assigned technician notices the phone does not have a protective case, and the user constantly transports the phone in a pocket. The technician attempts to use a secondary charger, but the cable falls out of the phone.
Which of the following is the MOST likely cause of the issue?


A. The phone requires a firmware update to address charging issues.
B. The charge port contains foreign objects, such as lint.
C. The phone's battery has swelled, preventing the utilization of the charge port.
D. The phone has experienced water damage, thus the battery is not charging.