UK visitor visa for parents

[blinguk]

Hi All

I am filling up the online form for my mother and father in law.
I see an option of About your relative where it asks about my wife.
Their relationship to you is Daughter next we have
What permission do they have to be in the UK?
My wife is on a spouse visa so the answer would be They have a temporary visa

Is that correct?
or should it be
They are in the UK permanently

I just want to confirm

Thanks in advance