A Rock That Weighs 100 Lb on Earth Is Taken

A rock that weighs 100 lb on Earth is taken to the Moon. Which of the following statements accurately describes what would be observed?

A) The rock is easier to lift because its mass is less on the moon.
B) The rock is easier to lift because its weight is less on the moon.
C) The rock is more difficult to lift because the Moon's radius is less than Earth's.
D) The rock is just as difficult to lift on the Moon as it is on Earth because its mass hasn't changed.