A Refrigerator Absorbs Energy of Magnitude $\mid$ Q_C $\mid$ As Heat from a Low Temperature Reservoir and Rejects Energy

A refrigerator absorbs energy of magnitude $\mid$ Q_C $\mid$ as heat from a low temperature reservoir and rejects energy of magnitude $\mid$ Q_H $\mid$ as heat to a high temperature reservoir. Work W is done on the working substance. The coefficient of performance is given by:

A) $\mid$ Q_C $\mid$ /W
B) $\mid$ Q_H $\mid$ /W
C) ( $\mid$ Q_C $\mid$ + $\mid$ Q_H $\mid$ ) /W
D) W/ $\mid$ Q_C $\mid$
E) W/ $\mid$ Q_H $\mid$