A small manufacturing company has a demand of 800 units of its products per month. The process is completed in four stages, which produce the following average percentages of good-quality units: Stage 1 Stage 2 Stage 3 Stage 4 88% 92% 81% 95% How many units of components does it need to buy to satisfy demand?

a. 701 950

b. 1201 1450

c. More than 1450

d. Less than or equal to 700

e. 951 1200