Select the option that expresses the given sentence in reported speech.

He said, “I must stay with her as her condition is critical.”

A

He said he would stay with her as her condition is critical.

B

He said that he has to stay with her as her condition has been critical.

C

He said that he would have to stay with her as her condition was critical.

D

He said he must stay with her as her condition were critical.