Karen is applying for the nursing school at the University of Davis. Before applying, she received a breakdown of the tuition and fees from the university.

Tuition: $736 per semester plus $209 per class
Books: $80 per class
Nursing School Fee: $15 per class
Parking: $65 per semester
Facilities Fee: $54 per semester
The total cost of a semester for c classes is represented by the following expression.
$304c + $855

Which statement best describes the coefficient of c?
A.
It is the sum of the additional cost of tuition, books, and nursing school fee.

B.
It is the sum of the cost of books and the nursing school fee.

C.
It is the sum of the tuition, parking, and facilities fee.

D.
It is the total semester cost of c classes at the university.

D. It is the total semester cost of c classes at the university.