1 7. The figure shows an equilateral triangle, with each side of length 2d. Two charges are fixed at two corners of this triangle: a positive charge, +462, and a negative charge, -6Q. Point P1 is the third corner of the triangle, and Point P2 is the midpoint of the side containing the two fixeld charges. If a positive charge q= +291 begins at P1 moves directly to P2, a distance of (ix/5, nd the change in its electrical potential energy. 13, A An increase by 2 kqu/d I\" ' B A decrease by 2kq1Q/d 2,2\" 2-,, c A decrease by Emma \"'5 \\ D An increase by 2kq1Q/d HQ '5 . _. 6Q P E A decrease by 2 1/5 kqu/ d 2