[单选题]
A 5.0-nC charge is at (0, 09v hl2sg:8 jdtg.r f,g) and a2tl4 vpb-4 oaa -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electricobvaa 2l4 -pt4 potential at point (0, 4.0 m)?
A. $15 \; V$
B. $3.6 \; V$
C. $11 \; V$
D. $7.7 \; V$