What was the reason given by a doctor that Edwards got this sight and hearing once more

A．He regained them from a head injury when he fell from a tree.
B．His wife's first visit after almost ten years made him so happy.
C．The lightning took the feeling from his legs and gave the sense of sight and hearing to his head.
D．Because the blow that caused him blind and deaf was very severe, it took another severe blow to restore them.