An object of mass m is placed on Spring A, which is compressed by distance x. The spring is released and the velocity of the pushed object as it leaves the spring is measured. The experiment is repeated with the same object on Spring B, which is compressed by the same distance x. The object travels faster when pushed by Spring B. What can be concluded?

A. Spring A had a higher elastic potential energy than Spring B.

B. Spring A's spring constant is higher than Spring B's.

C. Spring A's spring constant is lower than Spring B's.

D. Spring A has more mass than Spring B.