[单选题]
A 5.0-nC charge is a5o0*nm*c6 8o xuan8.gj lgpdot (0, 0) b0b .crdgxp(.viciuq jq )/.4and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity,x4.)jvq qu.(b drb cipc0/.ig what is the electric potential at point (0, 4.0 m)?
A. $15 \; V$
B. $3.6 \; V$
C. $11 \; V$
D. $7.7 \; V$
