Choose the most correct statement given that quadrilateral abcd has vertices a(2, 1), b(2, 4), c(7, 4), and d(6, 1)? 1. quadrilateral abcd is a parallelogram because opposite sides are parallel.2. quadrilateral abcd is a rectangle because opposite sides are parallel and consecutive sides form right angles.3. quadrilateral abcd is a square because opposite sides are parallel, consecutive sides form right angles, and all 4 sides have equal length.4. quadrilateral abcd is not a rectangle, square, or parallelogram because both pairs of opposite sides are not parallel, or congruent.