What should you consider if you encounter pivot warnings or errors during the solution process in a solver?
Options:
A) The solver is likely dealing with a problem that is too simple and requires more complex constraints.
B) The solver may be experiencing numerical instability or issues with the problem's constraints, such as infeasibility or unboundedness.
C) The solver is likely functioning correctly and no further action is required.
D) The problem's constraints are too restrictive and need to be loosened for a solution to be found.