Which of the Following Statements Is True Concerning Gun Control

Which of the following statements is true concerning gun control and conceal and carry?

A) The right to carry concealed weapons has not received a great deal of attention in the past few years.
B) Law enforcement officials support both sides of the argument.
C) Attempts by states and municipalities to control licensing, ownership, and carrying of guns have been fruitful.
D) Convicted felons and those with histories of mental illness may not be prohibited from gun ownership, according to the 2nd Amendment.