A LP Product Mix problem has been modeled in Excel and solved by Excel Solver. Examine the Excel Output below after Solver has found a solution and answer the questions that follow the output. (Note that the output is presented in slightly different format than the format that we used in class.) Activity Activity 1 Activity 2 3 Unit Profit 40 30 20 Resource Resource Resource Usage per Unit of Activity 5 1 3 Resource 1 Resource 2 Resource 3 3 1 1 4 1 2 Used 400 100 200 Available 400 100 200 Activity 1 Activity 3 Activity 2 Total Profit Level of Activity 50 50 0 3,000 26 The English names od decision variables X1, X2, X3 are: A) Resource 1 Used. Resource 2 Used, and Resource 3 Used B) Unit Profit of Activity 1, Unit Profit for Activity 2, Unit Profit for Activity 3 C) Level of Activity 1. Level of Activity 2. Level of Activity 3 D) Resource Usage per Unit of Activity 1. Resource Usage per Unit of Activity 2, Resource Usage per Unit of Activity 3 27 Algebraically state the objective function. A) Max Total Profit= 50X1+50X2+0X3 B) Min Total Cost = 20X1+40X2+30X3 C) Min Total Cost = 400X1+100X2+200X3 D) Max Total Profit = 20X1+40X2+30X3