In the early $1990$s$,$ before pay at the pump was an option, a gas station decides to force people to pre$-$pay due to drive$-$offs. The opportunity cost of this decision may include:

Question $21$ options:

the revenue lost because people who pay with cash will pay less than they think their tanks will hold in order to avoid having to return to the store to get change from paying too much

an increase in snack sales because people have to come into the store to pay for gas before pumping.

the gas station attendant not having to look outside for people waving to turn on the pump.

the value of the gas that is no longer stolen.