Aşağıdaki cümlelerin hangisinde 'relative clause' (sıfat cümlesi) doğru kullanılmıştır?
A) The book which I read was very interesting.
B) The book I read it was very interesting.
C) The book that I read it was very interesting.
D) The book what I read was very interesting.
E) The book who I read was very interesting.