Grabbed one gallon and wondered what the price would be . The shelf read " two gallons for $ 6.50 " and in fine print " one gallon at regular price " with no indication what regular price was . After waiting in a five minute line I finally learned that " regular price " is $ 4.00 so I left . We did n't need milk that 's as expensive as gas .

Q with options: Give answer the following question using evidence from the above passage: How much does the gas costs ?
Select from:
I. Less than a gallon of milk .;
II. None of the above choices .;
III. As much as one gallon of milk .;
IV. As much as two gallons of milk .;
III.