Solve the all parts of given problem:

Problem: In an Oklahoma thunder storm the Earth and the clouds can act like a capacitor, storing charge and energy. Eventually, the potential difference between the Earth and the bottom of the thunderclouds becomes so high that a spark, lightning, jumps from the clouds to the Earth. Suppose the potential difference has a high value like 34,000,000 V when the bottom of the thundercloud is 1300 m above the Earth and has an area of 95 km2.

Part A: Find the capacitance of this system µF.

Part B: the charge stored in the "capacitor" C.

Part C: the energy stored in the "capacitor" J.

Please give me an explanation for this problem.