Physics Work,Power & Energy Level: Misc Level

The gravitational potential energy of a 2.0 kg object, near the surface of the Earth, has decreased by 10J, Which of the following can you determine with this information?please explain your answer.

a.the initial height of the object.

b.the final height of the object.

c.both the initial and final height of the object.

d.the difference between the initial and final height Can you explain what has physically happened to the object in this scenario?