Question 6891 – Duality

Consider the following statements : 
(a) If primal (dual) problem has a finite optimal solution, then its dual (primal) problem has a finite optimal solution. 
(b) If primal (dual) problem has an unbounded optimal solution, then its dual (primal) has no feasible solution at all. 
(c) Both primal and dual problems may be infeasible. 
Which of the following is correct ?

Correct Answer: D