A Student's Class Average Can Be Computed by Dividing the Number

A student's class average can be computed by dividing the number of marks they have earned by the number of marks possible.Assume the following variables have been declared as shown and given values elsewhere:
int marksEarned, marksPossible;
double classPercentage;
Which of the following statements will assign the correct percentage average to classPercentage? For example, if marksEarned is 725 and marksPossible is 1000, classPercentage should be assigned the value 72.5.

A) classPercentage = marksEarned / marksPossible * 100.0;
B) classPercentage = 100 * marksEarned / marksPossible;
C) classPercentage = (100.0 * marksEarned) / marksPossible;
D) classPercentage = (100.0 + marksEarned) / marksPossible;