[单选题]
If the voltage across a c,p z31cz 66e-8f t ru+iggmzniircuit)0wj( r1v6rlkkw *xzy of constant resistance is doubled, the power dissipated by that *0rl(1jykkw 6z)xv rwcircuit will
A. quadruple.
B. double.
C. decrease to one half.
D. decrease to one fourth.
