How can an administrator inform a pool user that a recompose will take place?

[answerhappygod]

How can an administrator inform a pool user that a recompose will take place?

A. click on Users and Groups > select pool > click Send Message
B. click on Pools > select their pool > click Sessions tab > highlight user > click Send Message
C. click on Pools > highlight their pool > click More Commands > choose Send Message
D. click on Global Settings > click Edit > check Display warning before recompose > enter a message