Sander Enterprises prepared the following sales budget: Month March April May June Budgeted Sales $4,000 $10,000 $12,000 $20,000 The expected gross profit rate is 10% and the inventory at the end of February was $11,000. Desired inventory levels at the end of the month are 30% of the next month's cost of goods sold. What is the budgeted cost of goods sold for May? A. $3,600 B. $18,000 C. $10,800 D. $1,200