[单选题]
If the resistance in a circuit .gl/ lrbqj,j )with constant current flowing is1qwsx0*:b(p:cp w,( wjb9yqiyx2qxu doubled, the power1 (cqpuy w:wj:9xp,qy( swbxb0 q*ix2 dissipated by that circuit will
A. quadruple.
B. double.
C. decrease to one half.
D. decrease to one fourth.