How to choose focal length (35/40/50) for flower and plant product photography?

I own a Nikon D3500. I want to buy a lens so I can take photos of products (Flowers – Bouquets – Plants) to upload to my e-shop. I am working on a flower shop. I already have a white studio 90cm X 90cm and lights 4000K. I know the lights are not perfect… I was thinking of buying one of these lens (35mm – 40mm Micro – 50mm). How do I choose which lens to get?