Which of the following statement is INCORRECT about the foundational assumption used in CVP analysis. O Behavior of revenue and costs can be graphed as a straight line. O Only selling price and variable cost per unit are known and constant. O The time value of money is ignored. O Relative sales proportions of multiple products are known and constant. Which of the following statement is INCORRECT about the foundational assumption used in CVP analysis. O Behavior of revenue and costs can be graphed as a straight line. O Only selling price and variable cost per unit are known and constant. O The time value of money is ignored. O Relative sales proportions of multiple products are known and constant.