[单选题]
If the voltage acros p9mhk8jf0 z6k zv 2tum6rha)4s raxcf 5l3k)wv +c47a ea circuit of constant resistance is doubled, the power dissipated by w vka+ l5xc3)f7ce4 arthat circuit will
A. quadruple.
B. double.
C. decrease to one half.
D. decrease to one fourth.
