If minimum possible work is done by a refrigerator in converting 100 grams of water at 0^{\circ}C to ice, how much heat ( in calories) is released to the surroundings at temperature 27^{\circ}C (Latent heat of ice =80\; Cal/gram ) to the nearest integer ?
Option: 1 8791
Option: 2 309
Option: 3 4567
Option: 4 21

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