JEE Main 2018 Mathematics question

From 6 different novels and 3 different dictionaries, 4 novels and 1 dictionary are to be selected and arranged in a row on a shelf so that the dictionary is always in the middle. The number of such arrangements is :

• (A)at least 1000Correct
• (B)less than 500
• (C)at least 500 but less than 750
• (D)at least 750 but less than 1000