Consider the following linear program and determine an optimal solution using Solver. Define the decision variables as follows: B1 pound of shrimp bought in week 1, B2 pound of shrimp bought in week 2 S1 pound of shrimp sold in week 1, S2-pound of shrimp sold in week 2 El-pound of shrimp held in storage (inventory) in the end of week 1, E2 pound of shrimp held in storage (inventory) in the end of week 2. Max 10 S1+20 S2-10 B1-20 B2-2 E1-3 E2 s.t 700 B1-S1 E1 E1 B2 S2 E2 E1900 E2800 E2 >= 50 E1 E2,B1,B2,S1,S2>-0