[单选题]
The total amount of chargeja2gpdwft 1 pv((sd3 l5 ;lu6u that passes through a wire's ful3 *ycbp xua pttjbqf3-psy-5)41 ap*yl cross section at any pop5uj xas3yt** b tp4cq-p 1y)-fa3bpyint per unit of time is referred to as
A. current.
B. electric potential.
C. voltage.
D. wattage.