Assertion (A): `KMnO_(4)` is a stronger oxidising agent than `K_(2)Cr_(2)O_(7)`.
Reason (R ): This is due to increasing stability of the lower species to which they are reduced.

Options

A. If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`.
B. If both `(A)` and `(R )` are correct but `(R )` is not the correct explanation of `(A)`.
C. If `(A)` is correct but `(R )` is incorrect.
D. If `(A)` and `(R )` are incorrect.

Explanation

Both `(A)` and `(R )` are correct, and `(R )` is the correct explanation for `(A)`
In `KMnO_(4)`, the oxidation state of `Mn is +7`. ( highest oxidation state) and is reduced to `Mn^(2+)`, whereas in `K_(2)Cr_(2)O_(7)`, the oxidation state of `Cr +6` ( highest oxidation state) and is reduced to `Cr^(3+)`.
`Mn^(2+)` is more stable than `Cr^(3+)`. Hence, `KMnO_(4)` is a stronger oxidising agnet than `K_(2)Cr_(2)O_(7)`.