[单选题]
The windings of a DC motor :.e:phvs +pxghave a resistance of 6.00 W. The motor zkjv v q8n*d82operates on 120 V AC, and when running at full spvzj k88 nv*dq2eed it generates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?
A. $2.50 \; A$
B. $17.5 \; A$
C. $20.0 \; A$
D. $37.5 \; A$
