[单选题]
A piece of plastic hnk m b 1a+2-*j hiz5xh(udiec,as a net charge of +2.00 mC. ig zm ,:1*o9nbjsxqjko0eub(dq+awi36;dv 9How many more protons than electrons does this piece of plam oi,o9kdg+su3d(;9bj:aqe0 vj *zwb1nq6 ix stic have?
A. $1.25 \times 10^{13}$
B. $1.25 \times 10^{19}$
C. $2.50 \times 10^{13}$
D. $2.50 \times 10^{19}$
