[单选题]
A particle with a chn 1z)6a5v ,zr)fm vapza+vzvl,l*4 1 o bqwe7m8 w3qziarge of 4.0 mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?
A. $4.1 \times 10^{2} \; N/C$
B. $8.2 \times 10^{2} \; N/C$
C. $1.2 \times 10^{4} \; N/C$
D. $5.1 \times 10^{6} \; N/C$
