Please help

Sartain Corporation is in the process of preparing its annual budget. The following beginning and ending inventory levels are planned for the year. Each unit of finished goods requires 2 grams of raw material. If the company plans to sell 620,000 units during the year, how much of the raw material should the company purchase during the year? 1, 387,000 grams 1, 340,000 grams 1, 330,000 grams 1, 357,000 grams