[单选题]
If the resistance in a constant voltage circuit is doublimb;z6d l:p6 led, the power dissipate5-ek15c etuhzjr oh*2d bh*-5 51 oeuhr2 jzektcy 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.
