[单选题]
The charge carried beuye ss wv6/h4o ns(03y one ele6e9 4eqm2 jop) alg,rmctron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is
A. $6.25 \times 10^{18}$
B. $6.25 \times 10^{9}$
C. $1.6 \times 10^{19}$
D. none of the given answers
