1.Grade points are assigned as follows: A = 4, B = 3, C = 2, D = 1, and F = 0.Grades are weighted according to credit hours.If a student receives an A in a four-unit class, a D in a two-unit class, a B in a three-unit class and a C in a three-unit class, what is the student's grade point average?

a)3.00

b)1.75

c)2.50

d)2.75