Which two statements about NTP version 4 are true? (Choose two)

A.
It supports fast synchronization at starting and before network failures.
B.
It supports automatic server discovery.
C.
It uses a fixed-point arithmetic
D.
It supports the “nanokernel” kernel implementation.
E.
It does not support Public-Key Cryptography
Explanation:
Reference: http://www.ntp.org/ntpfaq/NTP-s-def.htm#Q-DEF-OV-V4NEWS