A bicyclist was riding his bicycle in the street when a negligently driven car struck the bike, knocking the bicyclist off the bike and breaking his right ankle. The driver of the car immediately stopped and went to his assistance. She got him to his feet and was slowly moving him toward the curb when a negligently driven taxicab struck him in the left leg. The bicyclist required surgery on both his right ankle and his left leg. If the bicyclist sues the driver and the cabbie, which of the following best states his right to recover?

A He can recover from either the driver or the cabbie for all of his injuries because the driver and the cabbie are jointly and severally liable.
B He can recover from the driver only for the injury to his right ankle and recover from the cabbie only for the injury to his left leg.
C He can recover from either the driver or the cabbie for the injury to his left leg and recover from the driver only for the injury to his right ankle.
D He cannot recover against the driver for the injury to his left leg unless the jury determines that the driver acted negligently when she came to his aid.