Your scholarship depends on your maintaining a 3.5 cumulative GPA. Your GPA for last semester was 3.6, which brought your cumulative GPA down. What must be true（）

A. Last semester’s grades were higher than your overall GPA

B. If this semester’s grades are the same as last semester’s, you might lose your scholarship

C. If this semester’s grades are the same as last semester’s, your overall GPA will stay the same

D. Last semester’s grades were lower than your overall GPA