A company has 23,500 employees. The average length of service for the employees is 9.3 years with a standard deviation of 4.2 years. Find the length of service (to the nearest one-tenth of a year) for an employee whose time in service has a z-score of

1.7.

A.

15.7 years

B.

7.6

years

C.

16.4

years

D.

13.5 years