process x has fixed costs of $10,000 and variable costs of $2.40 per unit. process y has fixed costs of $9,000 and variable costs of $2.25 per unit. which of the following statements is true? group of answer choices process y is cheaper than process x at all volumes. process x is more profitable than process y and should be selected. it is impossible for one process to have both of its costs lower than those of another process. process x should be selected for very large production volumes. the crossover point is approximately 6667 units.