From Past History, the Scores on a Statistics Test Are

From past history, the scores on a statistics test are normally distributed with a mean of 70% and a
Standard deviation of 5%. To earn a "C" on the test, a student must be in the top 25% of the class.
What should a student score to receive a "C"?

A) 77.21
B) 73.37
C) 73.96
D) 76.90