Which of the Following Is True of Computer Simulations

Multiple Choice

Which of the following is true of computer simulations?

A) The results are only as good as the instructions and models provided to the computer.
B) Simulations are usually much more time-consuming and costly than experiments or studies.
C) Since simulations are performed by computer, human error is eliminated, and thus the simulation results describe the modeled system exactly.
D) a and c only