Which of the Following Statements About the Sprite Distributed Operation

Which of the following statements about the Sprite distributed operation system is false?

A) Sprite uses process migration to balance the workload of the system.
B) Sprite uses explicit acknowledgements to ensure that messages are delivered reliably.
C) Location-independent calls produce the same result for all workstations.
D) The Sprite file system caches files on both the server and client.