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 20 40 30 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 32 Which resource(s), if any, would you recommend buying more of? Why? A) Resource 2 because it has the smallest Usage per Unit of Resource for any Activity B) Resource 2 because it has the greatest Profit per Usage of resources for all Activities C) None of them individually because in the optimal solution, all Resources are fully utilized D) All Resources because Level of Activity 3 equals zero in the optimal solution