The Hadley company produces widgets, which are seasonal products. Therefore, the company produces 10,000 units per month during the first six months of the year (January to June) and 30,000 units per month during the last six months of the year (July to December). It takes three pounds of product XYZ to produce one widget. The company plans to start each month with enough product XYZ for the next two months to avoid shortages. How much of product XYZ should the company purchase during the month of May?

a. 30,000 pounds

b. 60,000 pounds

c. 20,000 pounds

d. 90,000 pounds