[单选题]
A piece of plastic has a net charge of +2.00 mC. Hq85gp+d abbt.rmw18n+ uwx:kw) kqltm7m 9 6oow man, i 3u ojl1c2v; mnt2urey54aey more protons than electron5j2 ionm,1 uev42uceytr3l ; as does this piece of plastic have?
A. $1.25 \times 10^{13}$
B. $1.25 \times 10^{19}$
C. $2.50 \times 10^{13}$
D. $2.50 \times 10^{19}$
