The work done by a centripetal force is always Zero. Here force and

displacement are perpendicular to each other.$\left(\theta =90°\right)$

            (or)

The work done by the centripetal force is always zero.

Even we increase or decrease the radius or mass of the particle.

Centripetal force always remain $\overrightarrow{F}\perp \overrightarrow{V}$  so work done will remain zero.

$W=\overrightarrow{F}\cdot v\Delta t\cos \theta \theta =90°$

$W=0$

So option a, b, c are not correct.