The relevant range is important because estimates of production levels and their associated costs:

Select one:

a. within the relevant range have a stronger probability of estimating errors and must be analyzed carefully for accuracy.

b. outside of the relevant range have a stronger probability of estimating errors and must be analyzed carefully for accuracy.

c. outside the relevant range have a weaker probability of estimating error/bias and therefore the relevant range should be narrowly defined.

d. within the relevant range have a stronger probability of estimating error/bias and therefore the relevant range should be broadly defined.