フリー問題

問題文

Certain expensive parts must be tracked by individual serial number, not just by count. What supports tracking a specific unit?

選択肢

1. Serialized products, which are tracked by an individual serial number, not count.
2. A product transfer, which assigns serial numbers to expensive parts it moves.
3. A service objective, which tracks parts by serial number and then scores the candidates by stock.
4. A location, which serializes the parts as they arrive and then assigns them serial numbers.