The Copperfield Mining Company owns two mines which producethree grades of ore:

The Copperfield Mining Company owns two mines which producethree grades of ore: high medium and low. It cost Copperfield$200 per hour to mine ore from mine 1 and it cost $160 per hour tomine ore from mine 2. The company developed the followingmathematical model to determine the number of hours it needs tooperate each mine so that its contractual obligations can be met atthe lowest. Using the graphical analysis the company found point Bas the optimal solution. Min 2001 + 1602 (cost $) Subject to:61 + 2X2 >= 12 (high-grade ore tons) 21 + 2X2 >= 8(medium-grade ore tons) 41 + 122 >= 24 (low-grade ore tons)X1 x2 0 a Identify the sensitivity ranges for the objectivefunction coefficients b Identify the sensitivity ranges for theright hand values of the first and third constriants SEE ATTACHMENTFOR ADDITIONAL GRAPH. PLEASE SHOW ALL WORKING NO SOFTWARE