I have no idea what to do, any help? Thanks in advance

The SAT scores of entering freshman at University X have a N(1200, 90) distribution. The SAT scores of entering freshman at University Y have a N(1215, 110) distribution. A random sample of 100 freshmen is sampled from University X, and , the sample mean of the 100 scores from University X, is computed. The probability that is greater than 1215, the population mean for University Y, is
A. 0.0475.
B. 0.5000.
C. 0.4325.

Question

I have no idea what to do, any help? Thanks in advance

The SAT scores of entering freshman at University X have a N(1200, 90) distribution. The SAT scores of entering freshman at University Y have a N(1215, 110) distribution. A random sample of 100 freshmen is sampled from University X, and , the sample mean of the 100 scores from University X, is computed. The probability that  is greater than 1215, the population mean for University Y, is
A.	0.0475.
B.	0.5000.
C.	0.4325.