Read the following SAT test question and then click on a button to select your answer.

Hareg's motorcycle uses 1 gallon of gas for every 30 miles traveled when traveling at an average speed of 60 miles per hour. The motorcycle's gas tank has 5 gallons at the beginning of a trip. If Hareg's motorcycle travels at an average speed of 60 miles per hour, which of the following functions best models the number of gallons of gas, g(h), remaining in the tank h hours after the trip begins?

A.g(h)=5-2h
B.g(h)=5-h/2
C.g(h)=(5-60h)30
D.g(h)=(5-30h)/60

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