A company uses the weightedaverage method of inventory valuation under a periodic inventory system. The company began the year with a zero inventory balance. They had the following transactions during the year.

1. Purchased 60 units at 7.00 per unit

2. Purchased 110 units at 7.00 per unit

3. Sold 85 units at 11.00 per unit

4. Purchased 60 units at 8.00 per unit

5. Sold 85 units at 13.50 per unit

A: 436

B: 1234

C: 1670

D: 7