Which Statement Concerning Effective Positive Reinforcement Is True

Which statement concerning effective positive reinforcement is true?

A) Continuous schedules are most effective for establishing and maintaining a behavior.
B) Partial schedules are most effective for establishing and maintaining a behavior.
C) When first learning a behavior, a partial schedule of reinforcement is best, but when attempting to maintain a behavior, a continuous schedule is most effective.
D) When first learning a behavior, a continuous schedule of reinforcement is best, but when attempting to maintain a behavior, a partial schedule is most effective.