Microsoft Sql Error In String For Wrong Syntax

First time posting on here. Please can someone help me with this very simple error that I cannot seem to fix. if @DivResult > 0 and @IfMenu = ('A','F') There is a syntax error

Solution 1:

This is not valid tsql syntax: and @IfMenu = ('A','F')

The correct would be: and @IfMenu in ('A','F')