What Did the Government Have to Show in the Bolger

What did the government have to show in the Bolger case in order for the federal statute against mailed contraceptive ads to be upheld?

A) That the federal statute concerned symbolic speech.
B) That the federal statute was restricting false advertising,rather than the product itself.
C) That the restriction was carefully tailored to serve a substantial interest.
D) That the restriction was tailored to serve a compelling interest.