Piston Rings

I have a NOS Mahle SIL piston which is spot on for clearance in the barrel I'm going to put back in my Lince.
It's a three ring piston, with one chrome ring and two plain rings. I'm sure I've seen advice to only fit two rings on these.
Should it be one chrome and one plain or the two plain ones?
It's a three ring piston, with one chrome ring and two plain rings. I'm sure I've seen advice to only fit two rings on these.
Should it be one chrome and one plain or the two plain ones?