Work done in increasing the size of a soap bubble from a radius of 3 cm to 5 cm is nearly (Surface tension of soap solution = $ 0.03 Nm^{-1}$) :

Question

( A ) $0.2 \pi m J$
( B ) $4 \pi m J$
( C ) $0.4 \pi m J$
( D ) $2 \pi m J$