A mercury drop of radius 1 cm is sprayed into $10^6$ drop of equal size. The energy expanded in joules is : <br> (Surface tension of mercury is $460 \times 10^{-3} N/m$)

Question

( A ) $5.7 \times 10^{-3}$
( B ) $5.7$
( C ) $0.057$
( D ) $5.7 \times 10^{-4}$