For so many years (a)/ it is almost his habit (b)/ to go to the bed at 10 pm daily. ©/ No error (d)

Read each sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence, the letter of the part is the answer. If there is no error, the answer is ( e ). The P.M. said (a)/ that it was his decision (b)/ and that nobody (c)/ could get it changed. (d)/ No error (e)