[单选题]
A 5.0-nC charge is at (0, 0) and a -2.0a5v kv-z1,u ou3pemv: tnl)7e/pyutlb t97-p-nC charge is at (3.0 m, 0). If the potential is taken u9-ptp by7/t lto be zero at infinity, what is the electric potential at point (0, 4.0 m)?
A. $15 \; V$
B. $3.6 \; V$
C. $11 \; V$
D. $7.7 \; V$
