In Minnesota, during a stationary test, the noise level emitted by motorized boats manufactured prior to January 1, 1982, must not exceed which of the following?
A) 90 decibels at a distance of 50 feet.
B) 82 decibels at a distance of 50 feet.
C) 75 decibels at a distance of 50 feet.
D) 88 decibels at a distance of 50 feet.