A taxi driver charges a flat rate of $3. 25 plus an additional $0. 75 per mile. If Amanda has, at most, $70 for a cab ride, how far can she travel?
A) Amanda can travel at most 89 miles.
B) Amanda can travel at most 91 miles.
C) Amanda can travel at most 83 miles.
D) Amanda can travel at most 78 miles.