Consider the following statements:
Statement I - Thickness of the troposphere at the equator is much greater as compared to poles.
Statement II - At the equator, heat is transported to great heights by strong convectional currents.
Which one of the following is correct in respect of the above statements?
a. Both Statement I and Statement II are correct and Statement II explains Statement I
b. Both Statement I and Statement II are correct and Statement II does not explain Statement I
c. Statement I is correct, but Statement II is incorrect
d. Statement I is incorrect, but Statement II is correct