Find out which part of a sentence has an error.(A) Owing to his /(B) ill health, he will /(C) not be able to give this examination, which m…

Find out which part of a sentence has an error.
(A) Owing to his /(B) ill health, he will /(C) not be able to give this examination, which means /(D) he will have to lose one year. /(E) No Error.