[单选题]
Doubling the capacitance of a capa3ssfh8/0 ;stg y 4hq3to2cw pxcitor holding a constant charge causes96 c/ q1bkbwhb2g pl,h the energy st b/h bl1,6whb29pqckgored in that capacitor to
A. quadruple.
B. double.
C. decrease to one half.
D. decrease to one fourth.