Q18: Find and plot: \text { A. }(2+j 7)+(-4+j 5) \text { B. }(-3-j 2)+10 \angle 130^{\circ} \text { c. }\left(7 / 70^{\circ}\right)^{*}\left(3 \angle 4-50^{-}\right) \text { D. }\left(7 \angle

70^{\prime}\right)=(6-j 3) \text { E } 10 \angle 130^{\circ} / 6 \angle-150^{\circ}