The relationship between original programming and dual programming can be described as ( )

A、The primal problem has a feasible solution, and the dual problem also has a feasible solution
B、The dual problem has no feasible solution, and the original problem also has no feasible solution
C、The primal problem has an optimal solution, while the dual problem certainly has no optimal solution
D、The original problem has no bounded solution and the dual problem has no feasible solution