You Can Buy Euros at a Currency Exchange Store or at the Airport

You can buy euros at a currency exchange store or at the airport. If you want to buy €250, would it be better to pay a 1% transaction fee or a flat service charge of $10.00? Use C$1.00 = €0.64491 as the exchange rate.

A) 1% transaction fee more expensive by $6.12
B) 1% transaction fee less expensive by $6.12
C) flat service charge less expensive by $6.12
D) flat service charge more expensive by $6.12
E) no difference in fee