With which citta do Arhats produce 2 kinds of intimation?

I was reading Nina’s book on physical phenomena.

On page 72 (or 86 in pdf) she has said: “Among the cittas that can produce the two kinds of intimation are the kusala cittas of the sense-sphere (thus not those that attain absorption or jhāna and those that realize enlightenment), and the akusala cittas

If Arahants do not have any kusala or akusala cittas, then with which citta do they produce bodily and verbal intimation?

Probably kiriya citta, right? Am I understanding this correctly?

Yes I think you are right.