please answer (completely) from the given choices. no need for solutions. i need ASAP

Refer to the Management Scientist output of a maximization LP problem. The constraints are defined as follows: Constraint 1: advertising budget s > Constraint 2: sales force availability s > Constraint 3: production level (-) Constraint 4: retail stores requirement 2 > Optinal Solution Objective Function Value - 48450 000 Variable Value Reduced Costs X1 x2 X4 25 000 425.000 150 000 0.000 0.000 0.000 0.000 45.000 Constraint Slack/Surplus Dual Prices 0.000 25.000 0.000 0.000 3.000 0.000 60.000 -17.000 OBJECTIVE COEFFICIENT RANGES Variable Lover Limit Current Value x1 x2 x3 X4 84.000 50.000 No Lover Limit No Lover Limit 90.000 84.000 70 000 60 000 Upper Limit No Upper Linie 90 000 87 000 105 000 RIGHT HAND SIDE RANGES Constraint Lover Limit Current Value Upper Limit 4950.000 1775.000 515.000 0.000 5000.000 1800 000 600.000 150.000 5850.000 No Upper Linit 603.571 200 000 What should be the objective function coefficient of X4 to make its value positive? 45 105 115 195 Question 12 1 pts What is the maximum change in the coefficient of X2 in the objective function in order for the optimal solution not to change? increase by 16 decrease by 34 cannot be changed increase by 40 Question 13 1 pts Which of the following statements is CORRECT? The right hand side value of constraint 2 may be increased by 25 units. There is a decrease in the profit for every increase in production level, There is a slack of 25 units in sales force. There is an increase in profit for every unit increase in the retail store requirement o Question 14 How much is the profit if there is an increase of 2 units in production? $48,416 0 $48,484 O $48,510 $48,570 Question 15 How much is the change in profit if the retail store requirement increases by 1 unit? increase by $50 decrease by $17 decrease by $50 increase by $17