An adult accompanying with two children aged 1 and 3 years old, how much will the adult pay for the travel if the normal fare is $ 220

A．If the transport is between a town and the airport.
B．If a passenger wants to catch a plane.
C．If a passenger has just finished the air trip.
D．If a passenger is at town terminal.

A．Children under two are charged 10% of the normal fare under any circumstances.
B．The second child under two accompanying the same adult is charged 50 % of the normal fare.
C．A 12-year-old is charged 50% of the normal fare.
D．Unaccompanied children are charged the normal fare.