2 Which of the following combinations of constraints has a feasible region? Please choose the option below that would best answer this question above. a) 2x+5x2 30 and x1 + x2 40 b) None of the above. c) 3x1 +5x220 and 6x1 + 10x2 120 d) 2x1 x2 30 and 3x1 + x2 40 e) xi-x2 3 and x1 + x2 7