Cam, Inc., buys plain T-shirts and prints different designs on them for various occasions. It imports the T-shirts from Vietnam. The following is the sales estimates (in units) for the next five months: January 6,200 February 8,900 March 6,600 April 7,100 May 7,800 . The T-shirts cost $2.00 each and they sell it for $10.00 each. At the end of each month, inventory on hand should equal 10% of the following month's sales needs. Historically, 50% of sales are collected in the month of sale, 30% is collected the month after the sale, 18% is collected two months after the sale, and 2% are written off as uncollectible. What is the number of t-shirts to be purchased in February