Beginning inventory for the month contained 2,000 units that were 70% complete with respect to materials. During the month, 60,000 units were completed and transferred out. Ending inventory contained 4,000 units, 20% complete with respect to materials. Therefore, the weighted average equivalent units of production with respect to materials for the month would be:

a. 63,000.

b. 59,200.

c. 60,800.

d. 61,600.

Which of the following statements about the contribution margin ratio is true?

a. If the contribution margin ratio increases, the price must have decreased.

b. It is the proportion of each sales dollar available to cover variable costs.

c. If the contribution margin ratio increases, the variable cost ratio decreases.

d. It is complementary to the net profit ratio.