Which of the Following Is True of the Line-Item Veto

Which of the following is true of the line-item veto power for the president?

A) The Supreme Court ruled that the Constitution does not authorize the line-item veto.
B) The president may currently use the line-item veto but chooses to do so only rarely because veto bargaining makes it unnecessary.
C) Presidents since Bill Clinton have made judicious use of the line-item veto to reduce pork-barrel spending in budgetary bills.
D) The line-item veto can only be used in the last 10 days that Congress is in session.
E) The line-item veto is only allowed after Supreme Court review of the legislation.