If L$1$ is decidable and L$2$ is recognisable then $($select all that apply$)$:

Choice $1$ of $3$: L$1\backslash$cup L $2$ is decidable.

Choice $2$ of $3$: L$1\backslash$cup L $2$ is not decidable.

Choice $3$ of $3$: Not enough information to answer.