[单选题]
As more resistors areivdhu75 i7 xpyt8;- fb,zbg 8f added in series to a con8+xstv;htv l5stant voltage source, the power supplied by the s;v s8tlhx+v t5ource
A. increases.
B. decreases.
C. does not change.
D. increases for a time and then starts to decrease.