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In the following questions, a sentence has been divided into four parts and marked a, b, c and d. One of these parts contains a mistake in grammar Idiom or syntax. Identify that part and mark it as the answer.

A. Everyone who saw the movie Star Wars

B. is unanimous in their view

C. that it is the best science fiction movie

D. ever produced

Please do not use chat terms. Example: avoid using "grt" instead of "great".