According to the Textbook,the Reason Parents Use Safety Seats for Their

According to the textbook,the reason parents use safety seats for their infant children in cars but not in airplanes is

A) they are not required to when flying.
B) parents are generally unconcerned with the safety of their children in planes.
C) buying an extra plane ticket is more than the benefit of a small increment in safety.
D) airlines fail to produce safety seats.