The Weights of 6-Week-Old Poults (Juvenile Turkeys) Are Normally Distributed

The weights of 6-week-old poults (juvenile turkeys) are normally distributed with a mean 8.6 pounds and standard deviation 1.9 pounds. A turkey farmer wants to provide a money-back guarantee that her 6-week poults will weigh at least a certain amount. What weight should she guarantee so that she will have to give her customer's money back only 1% of the time?

A) 4.59 lb
B) 3.34 lb
C) 5.00 lb
D) 4.17 lb