You Have Been Given the Following Data

You have been given the following data:
Specification information: Anything between 10 and 20 units per order is acceptable.
Process Mean: 13
Upper limit of the process: 16
Lower limit of the process: 10
Using this information, Determine the C_pk.

A) 1.11
B) 2.33
C) 1.33
D) 1.00
E) 1.67