Which of the Following Statements About Signing Statements Is Most

Which of the following statements about signing statements is most accurate?

A) The Constitution requires that the president explain his or her interpretation of every law he or she signs by issuing a signing statement.
B) Although signing statements were commonly used prior to 1900, no modern president has issued them when signing a piece of legislation into law.
C) Signing statements never instruct executive agencies whether to implement sections of a new law and never interpret ambiguous provisions of the law.
D) While presidents have made signing statements throughout American history, they have only recently been recorded and made part of the official legislative record.