What is the suffix for –OH group according to IUPAC?

Correct option is A

According to the International Union of Pure and Applied Chemistry (IUPAC) nomenclature rules, the suffix for the -OH group is "-ols".
· Aldehydes as a functional group we use –al as suffix,
· Ketone as a functional group we use –one as Suffix
· The "-ene" suffix is added to the name of the parent carbon chain to indicate the presence of the double bond.
· The "-ane" suffix is added to the root name of the carbon chain to indicate that it consists of only single bonds.