How are files locked by ECS with NFSv3 enabled?

How are files locked by ECS with NFSv3 enabled?
A . ECS runs pNFS as does any NFSv4 server
B . ECS globally locks files from any node at any site
C . The NFSv3 clients do file locking
D . ECS runs NLM as does any NFSv3 server

View Answer

Answer: B