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\mathrm{.}00?$

Use $C$$$1\mathrm{.}00=0\mathrm{.}7441$ as the exchange rate.

$1\%$ transaction fee more expensive by $C$$$6\mathrm{.}64$

$1\%$ transaction fee less expensive by $C$$$6\mathrm{.}64$

flat service charge less expensive by $C$$$6\mathrm{.}64$

flat service charge more expensive by $C$$$6\mathrm{.}64$

no difference in fee