The mysql client writes a record of executed statements to a history file on Unix.

Answer: Option A

This question asks about how the MySQL client works on a Unix system.
The MySQL client is a tool used to interact with a MySQL database.
On Unix systems, the client keeps a record of the commands you use in a file called the history file.
This allows you to see your past commands and re-run them easily.
So, the answer is Option A: True.