essential, necessity or basic

[flytothesky]

Hello~ Would you help me with saying this naturally please?

A: Do you have empty room in your house? I plan to move out.

B: Yes, we have one.

A: Good, do you have desk and bed then?

B: ⓐOf course, That’s basic! We also have wardrobe, big stand light and nice curtain in that room.
ⓑOf course, That’s essential!
ⓒOf course, That’s standard!

[jamiep]

I think "basics" is a good choice in this context.

"Those are the basics! We also have a wardrobe, a big stand light and nice curtains in that room"