Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The energy required to form `Mg^(2+)` from Mg is much higher than that required to produce `Mg^+`
Reason R : `Mg^(2+)` is small ion and carry more charge than `Mg^+`.
In the light of the above statements, choose the correct answer from the options given below.

Options

A. Both A and R are true but R is NOT the correct explanation of A
B. A is true but R is false
C. A is false but R is true
D. Both A and R are true and R is the correct explanation of A