Identify which of the CVP assumptions is violated in each of the circumstances described below.
a. Price per unit declines as the volume of sales and production increase.
b. Labor productivity increases as the volume of production declines.
c. The sales mix in a multiproduct firm varies as the volume of total sales changes.
d. Mixed cost cannot be separated into variable and fixed components.
e. Costs behave according to a curvilinear function.
f. Sales and production volume differ.
g. Fixed cost and capacity can be adjusted within the period.