Given the statements below, select ALL CORRECT responses:
A. Simulation models allow the inclusion of real-world complications that most decision models do not allow
B. Simulation models are ALWAYS cheap and quick to produce
C. Simulations allow modelers to compare possible alternatives without interfering with the real-world scenario
D. Simulations do NOT provide optimal solutions - they only evaluate the alternatives requested
E. Simulations require multiple replications in order to best determine results
F. Simulation models are UNIQUE to the scenario - this requires a new model for each scenario.