I hope to visit (a)/ my uncle only next year(b)/ during summer vacations.(c)/ 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 ). This is the wristwatch (a)/ which my uncle (b)/ brought it (c)/ for you. (d)/ No error (e)