the grades A,B,C,D, F are assigned with the point 4,3,2,1,0,, respectively. the dataa file "grade.data" contains the grades of ten courses for student. for example: A A B C A B B B A C write a c program that reads the letter grades from the data file, calculate and print the GPA for student. if the GPA is 3.5 or greater, print"Student is on the Dean's honor list".