It is a (a)/ worth watching documentary(b)/ & you must not miss it.(c)/ No error (d)

Each question in this section has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part and indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). Such books(a)/ which you read(b)/ are not worth reading.(c)/ No error. (d)