this is operation research question

2). Consider the feasible region given by the following constraints: X1 x2 > 0 X1 + x2 0 (a). Is the point x1 = 0, X2 = 0 basic? feasible? Explain briefly. (b). Is the point x1 0, X2 = 4 basic? feasible? Explain briefly. (c). Is the point x1 = 1, 12 = 1 basic? feasible? Explain briefly. (d). Is there an objective function that will be unbounded for the above contraints? If yes state one such objective function. If no, explain briefly. (e). Is there an objective function that will have multiple optimal solutions for the above contraints? If yes state one such objective function. If no, explain briefly