13) The owner of a heating and air conditioning company has two employees that make service calls.He is interested in the number of service calls made per day.The sample standard deviation for employee A is 1.05 calls per day and 1.23 calls per day for employee B.A random sample of 15 days last year showed that employee A made an average of 4.67 calls per day.For a sample of 17 days employee B made an average of 5.02 calls per day.At the 0.05 significance level, is there a difference in the mean number of calls per day between the two employees?Assuming equal population variances, select the appropriate alternative hypothesis.

A. A B

B. A > B

C. A B

D. A = B

E. A B