A student used f (x) = 12.00(1.02)^x to show how the balance in a savings account will increase over time. What does 12.00 represent?

A. The interest the savings account earned for the first year

B. The annual interest rate of the savings account

C. The number of years the savings account has earned interest

D. The starting balance of the savings account

i really could use some help with this math question