[单选题]
If the resistance in a constant voltage circuit is doubled, the- tl d,etlr5e2 power dissipateobxh/s9 b4l 79+sx zsid bs/ibzsh+ l74sbx9ox 9 y that circuit will
A. increase by a factor of two.
B. increase by a factor of four.
C. decrease to one-half its original value.
D. decrease to one-fourth its original value.
