What is true regarding the time in a Linux system?

A.
The BIOS clock of a computer always indicates the current local time and time zone.

B.
Each application must convert the Unix time to the current time zone which is usually done by
using standard libraries.

C.
When the system is on the network, each query for the current time leads to a new network
connection to a time server.

D.
When the system time changes, running processes must be restarted in order to get the correct
time.

Explanation: