[单选题]
Q1 = 6.0 nC is at (0.30 m, 0); Q2 o: d1vv;br w, 4x.n)mrfgm-os= -1.0 nC is at (0, 0.10 m); Q3 = 5. yn k(/ts+lbodri,/6q0 nC is at (0, 0). Wh+isb6y rtd ,k/l(q/on at is the direction of the net force on the 5.0 nC charge?
A. $34^{\circ}$ above +x axis
B. $34^{\circ}$ above -x axis
C. $56^{\circ}$ above +x axis
D. $56^{\circ}$ above -x axis