Solve the Problem $3 \%$ Of the Television Sets to Fail While Under Warranty?
A)

Multiple Choice

Solve the problem.
-If the life, in years, of a television set is normally distributed with a mean of 30 years and a standard deviation of 5 years, what should be the guarantee period if the company wants less than $3 \%$ of the television sets to fail while under warranty?

A) Less than 16.25 years
B) Less than 39.4 years
C) More than 20.6 years
D) Less than 20.6 years