user
A MAN AND HIS SON WERE IN A TRAFFIC ACCIDENT.   TWO AMBULANCES COME AND CARRY THEM TO DIFFERENT HOSPITALS.   THE SON NEEDS EMERGENCY SURGERY, BUT UPON ENTERING THE ROOM THE DOCTOR SAYS I CAN NOT OPERATE ON HIM, HE IS MY SON.    HOW IS THIS POSSIBLE?  (YES, HIS REAL DAD IS BEING CARED FOR AT ANOTHER HOSPITAL. )
A: cover
B: simulator
C: docter is his mother
D: cares
E: emergency room
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

C

<|end_of_solution|>