Alan will use a compound pulley to lift a crate from the floor of his garage to a storage shelf. The shelf is 3.5 meters above the floor. Alan pulls 10.5 meters of rope to lift the crate. Which statement is correct? (1 point)
A. Alan uses one-third the force he would have needed without the compound pulley.
B. Alan uses three times the force he would have used without the compound pulley.