(02.02 MC) The total cost f(x), in dollars, for renting a bike for x hours is shown:
f(x) = 10 + 20%
What does f(10) represent?

A.) The number of miles the bike can travel for a cost of $10

B.) The number of miles the bike travels in 10 hours

C.) The number of hours the bike can be rented for a cost of $10

D.) The number of dollars it costs to rent the bike for 10 hours