Three firms carry inventories that differ in size. Firm A's inventory contains 2,000 items. What is the size of inventories for Firm B and Firm C?
1) 1,500 items for Firm B and 2,500 items for Firm C
2) 2,500 items for Firm B and 1,500 items for Firm C
3) 2,000 items for Firm B and 2,000 items for Firm C
4) 1,000 items for Firm B and 3,000 items for Firm C