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Speed of a Roller Coaster

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Imagine the speed of a roller coaster in miles per hour is determined by the formula $ \cfrac{PT}{2C} $, where $C$ is the number of cars in the amusement park's parking lot, $P$ is the number of people waiting in line, and $T$ is the temperature in degrees Fahrenheit.

On a lazy Monday morning, there are $20$ cars in the parking lot, and $30$ people waiting in line for the roller coaster.

If the ride is running at $60$ miles per hour, what is the temperature in degrees Fahrenheit?

A

$40$ degrees

B

$60$ degrees

C

$80$ degrees

D

$90$ degrees

E

$100$ degrees