Which two processes and daemons are executed by the /usr/lib/netsvc/yp/ypstart script on an NIS slave server?

Which two processes and daemons are executed by the /usr/lib/netsvc/yp/ypstart script on an NIS
slave server? (Choose two.)

A.
ypbind

B.
ypinit

C.
ypserv

D.
ypxfrd