A stationary particle explodes into two particles of a masses m1 and m2 which move in opposite directions with velocities \[{{v}_{1}}\] and \[{{v}_{2}}.\] The ratio of their kinetic energies \[{{E}_{1}}/{{E}_{2}}\]is [CBSE PMT 2003]

• A.        \[{{m}_{1}}/{{m}_{2}}\]
• B.        1
• C.        \[{{m}_{1}}{{v}_{2}}/{{m}_{2}}{{v}_{1}}\]
• D.        \[{{m}_{2}}/{{m}_{1}}\]