Records Indicate That T Hours Past Midnight, the Temperature at the Local

Multiple Choice

Records indicate that t hours past midnight, the temperature at the local airport was $f ( t ) = - 0.3 t ^ { 2 } + 6 t + 12$ degrees Fahrenheit. What was the average temperature at the airport between 5:00 A.M. and noon? Round your answer to one decimal place, if necessary.

A) 75.1 degrees F
B) 40.1 degrees F
C) 28.1 degrees F
D) 16.5 degrees F