A Refrigerator Uses $100 \mathrm{~W}$ Of Electric Power and Discards $600 \mathrm{~W}$

Multiple Choice

A refrigerator uses $100 \mathrm{~W}$ of electric power and discards $600 \mathrm{~W}$ of thermal power into the kitchen. What is its coefficient of performance?

A) 0.17
B) 0.20
C) 5
D) 6
E) Other (specify)
F) Impossible because it violates conservation of energy.