Consider a profit maximization problem with the given tableau below with some unknown variables. or these unknown variables, write conditions that will make following statements correct. a. If current solution is feasible but not optimal; write the conditions to be satisfied for x3 to be the entering variable, and x4 to be the leaving variable? b. One basic variable, in the basic feasible solution, has a value of zero. (Also give the name of this special case) c. The current solution is not feasible. d. The current basic solution is feasible, but the LP is unbounded. (in this part, assume that b0 ) e. The tableau is optimal which has more than one optimal solution. (Also give the name of this special case)