(b) 寫出FTP檔案傳輸的兩種模式，並說明各適用於何種類型的檔案。

(b) The processes (A, B, and C) are running concurrently. Process A has acquired File1. Process B has acquired File2, but needs File1. Process C has acquired File3, but needs File2. Draw a diagram for these processes. Is this a deadlock situation? If your answer is “no”, show how the processes can eventually finish their tasks.