Construct a 90% confidence interval for the population mean, μ. Assume the population has a normal distribution. A sample of 15 randomly selected math majors has a grade point average of 2.86 with a standard deviation of 0.78. Round to the nearest hundredth.
A) (2.51, 3.21)
B) (2.41, 3.42)
C) (2.37, 3.56)
D) (2.28, 3.66)