Which is the following about a transaction is correct?

$($a$)$ The database user$/$programmer specify what operations form a transaction

$($b$)$ A transaction can contains multiple SQL statements

$($c$)$ The user have to write code to explictly ensure the ACID properties of a transaction will hold

Group of answer choices

$($a$),($b$)$ and $($c$)$

$($b$)$ and $($c$)$

$($a$)$

$($a$)$ and $($b$)$