A lead bullet of mass 21g travelling at a speed of $100 \; m/s$ comes to rest in a wooden block. If no heat is taken away by the wood, the rise in temperature of the bullet in the wood nearly is (sp. heat of lead = $30 cal/kg^{\circ}C$) :

Question

( A ) $33^{\circ}C$
( B ) $39^{\circ}C$
( C ) $25^{\circ}C$
( D ) $28^{\circ}C$