Q.74) Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : undergoes $\mathrm{S}_{\mathrm{N}^2}$ reaction faster than
Reason ( $\mathbf{R}$ ) : lodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below :
A) $\mathbf{A}$ is false but $\mathbf{R}$ is true
B) Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$
C) Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$
D) $\mathbf{A}$ is true but $\mathbf{R}$ is false