At a car dealership, the manager wants to line up 9cars of the same model in the parking lot. There are 3red cars, 2blue cars, and 4green cars. If all 9cars are lined up in a row facing forward, the number of possible car arrangements, if the red carscannotbe together, can be calculated using

A. 8! ^. ₈P₂ / 3!2!4!

B. 9! /3!2!4! - 3! 7! / 3!2!4!

C. 9! - 7!2! / 3!2!4!

D. 7! ^. ₇P₂ / 3!2!4!