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 $\mathrm{Mg}^{2+}$ from Mg is much higher than that required to produce
Reason R: $\mathrm{Mg}^{2+}$ is small ion and carry more charge than $\mathrm{Mg}^{+}$.
In the light of the above statements, choose the correct answer from the options given below:
