Kalyan Singhal Corp. makes three products, and it has three machines available as resources as given in the following LP problem: Maximizecontribution=4X1+4X2+7X31X1+7X2+4X31002X1+1X2+7X31108X1+4X2+1X3100X1,X2,X30(C1:hoursonmachine1)(C2:hoursonmachine2)(C3:hoursonmachine3) a) Using a computer software for solving LP, the optimal solution achieved is: X1=(roundyourresponsetotwodecimalplaces).X2=(roundyourresponsetotwodecimalplaces).X3=(roundyourresponsetotwodecimalplaces). Contribution (objective value )= (round your response to two decimal places) . b) Machine 1 has hours of unused time available at the optimal solution (round your response to two decimal places). Machine 2 has hours of unused time available at the optimal solution (round your response to two decimal places). Machine 3 has hours of unused time available at the optimal solution (round your response to two decimal places). c) An additional hour of time available for third machine, is worth dollars to the firm (round your response to two decimal places). d) An additional 5 hours of time available for the second machine, at no cost to the firm, are going to increase the objective value by dollars (round your response to two decimal places)