A. Every LP problem has an optimal solution
B. Optimal solution of an LP problem always occurs at an extreme point
C. At optimal solution all resources are completely used
D. If an optimal solution exists, there will always be at least one at a corner
✅ The correct answer is option D.
If an optimal solution exists, there will always be at least one at a corner statement is true with respect to the optimal solution of an LP problem.
If an optimal solution exists, there will always be at least one at a corner statement is true with respect to the optimal solution of an LP problem.