Solve the Problem $4 \%$ Of the Belts to Fail While Under Warranty, for How

Multiple Choice

Solve the problem.
-The life span of a certain type of car timing belt, calculated in miles, is normally distributed, with a mean of 80,000 miles and a standard deviation of 6500 miles. If the maker of the timing belt wants less than $4 \%$ of the belts to fail while under warranty, for how many miles should the timing belts be guaranteed?

A) Less than 90,725 miles
B) Less than 97,225 miles
C) Less than 62,775 miles
D) Less than 68,625 miles