Answer:
A. 1000 tools
Explanation:
Sam Company manufactured 21,000 machines.
Sam Company sold 20,000 tools.
The changes in inventory = Manufactured items - Sold items
The changes in inventory = 21,000 tools - 20,000 tools.
The changes in inventory = 1,000 tools.
Since there are no beginning inventories, we cannot add it with the manufactured items. Therefore, we just deducted the sales volume from production.