Diagram 1 shows a beam balance. A beaker with a wire loop balances the standard masses. The beaker is then removed and hung from a spring. The spring extends by 5.0 cm, as in diagram 2. The experiment is repeated with the same apparatus on the Moon, where the acceleration of free fall is less than on Earth. Which statement describes what happens on the Moon? A. The beam balance is balanced and the spring extends by 5.0 cm. B. The beam balance is balanced and the spring extends by less than 5.0 cm. C. The right-hand balance pan is higher and the spring extends by 5.0 cm. D. The right-hand balance pan is higher and the spring extends by less than 5.0 cm.