2 kg of ice at `-20^(@)C` is mixed with 5kg of water at `20^(@)C`. The water content of the final mixture is (Latent heat of ice `="80 kcal kg"^(-1)`, the specific heat of water `="1 kcal kg"^(-1).^(@)C^(-1)` and specific heat of ice `="0.5 kcal kg"^(-1).^(@)C^(-1)`)

Options

A. `{:(P,Q,R,S),(4,1,2,3):}`
B. `{:(P,Q,R,S),(1,3,2,4):}`
C. `{:(P,Q,R,S),(2,1,3,4):}`
D. `{:(P,Q,R,S),(1,2,3,4):}`