After September 11, 2001, the Transportation Security Administration (TSA) was created mainly to make air travel more secure in the United States. Which was an effect of the creation of the TSA?
A-Airplane passengers were thoroughly screened at airports.
B-Airline passengers had to have a passport to board an airplane.
C-Cell phones and computers were forbidden on airplanes.
D-Guns and knives were forbidden in checked bags on airplanes.