Reality Linear programming is only effective if the model you use reflects the real world. Every model relies on certain assumptions and they may be invalid: you assume, for example, that tripling production will triple sales, but in reality it saturates the market. Linear equations sometimes give results that don’t make sense in the real world, such as a result indicating that you should contract to build 23.75 battleships for the Navy to maximize profits how will you deal with the 0.75 in practical terms? Skilled linear programmers can tweak models and equations to deal with these problems, however. The correct answer is C.