A Null Hypothesis Is $\mu$ $\le$ 500 to Test This Hypothesis, a Sample of 40 Is

A null hypothesis is $\mu$ $\le$ 500. To test this hypothesis, a sample of 40 is taken and alpha is set at 0.01. If the true mean is 524 and population standard deviation is 115, what is the power of the test?

A) 0.16
B) 0.45
C) 0.67
D) 0.84
E) 0.99