Prepare a direct materials purchasing plan for January, February, and March, based on the following facts. Lana Gonzales owns a business that assembles ceiling fan units. Each fan requires one motor system and four blades. Motors cost $45 each, and blades are $4.00 each. Lana is able to reliably obtain motors as needed, and does not maintain them in inventory. However, blades are stocked in inventory sufficient to produce 40% of the following month's expected production. Planned production is as follows: January 11,000 February 13,000 March 16,000 April 12,000 In accordance with the stocking plan, January's beginning inventory included 13,000 blades.