C&A's potato chip filling process has a lower specification limit of 9.5 oz and an upper specification limit of 10.5 oz. The standard deviation is 0.5 oz. and the mean is 10 oz. what will the standard deviation of the process need to be in order to achieve a defective ppm of 2700?

A) .15

B) .2

C) .25

D).3

E) None of these

F) Can not be defined