Astudent earned grades of b, b, a, c, and d. those courses had these corresponding numbers of credit hours: 4, 5, 1, 5, 4. the grading system assigns quality points to letter grades as follows: a equals =4, b equals =3, c equals =2, d equals =1, and f equals =0. compute the grade point average (gpa) and round the result to two decimal places.

a. 3.15
b. 1.41
c. 8.20
d. 2.41