Wertheim Inc. prepared the following sales budget: Month Budgeted Sales $3000 March April $10,000 $12,000 May $20,000 June The expected gross profit rate is 20% and the inventory at the end of February was $9000. Desired inventory levels at the end of the month are 10% of the next month's cost of goods sold. What is the budgeted cost of goods sold for May? o $9600 O $2400 o $1200 $4000