How to use keywords in URL with parent-pages?

Hi guys,

I’m using WordPress parent-pages to structure my site and I’ve been wondering how keywords should appear in the URL slug for optimized SEO.

Let’s say my target keyword is “Wooden chairs for the kitchen”

Which URL structure is right?

A. https://www.example.com/chairs/kitchen/wooden

B. https://www.example.com/chairs/kitchen/wooden-chairs-kitchen

My question is if part of the keyword already appears in the parent’s slug, should I insert it again in the current slug or not?

I’ve been using example A mostly but Yoast plugin warns me about it saying: “(Part of) your keyphrase does not appear in the slug. Change that!”

Any advice would be much appreciated