Read the sentence below to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. Choose the option with that part as your answer. If there is no error, choose 'D' as your answer. (Ignore the errors of punctuation, if any).

When the dentist came in, my tooth was stopped aching out of fear that I might lose my tooth.

A.

When the dentist came in

B.

my tooth was stopped aching

C.

out of fear that I might lose my tooth.

D.

No error.

Correct answer is B

my tooth stopped aching