Sander Enterprises prepared the following sales budget: Month Budgeted Sales March $8,000 April $13,000 May $12,000 June $14,000 The expected gross profit rate is 40% and the inventory at the end of February was $10,000. Desired inventory levels at the end of the month are 20% of the next month's cost of goods sold. What are the total purchases budgeted for April? A. $7,440 B. $7,920 C. $7,680 D. $9,360