Rhubarb crowns

I have received my rhubarb crowns which are obviously from divided plants but they still quite a size , drum roll please for a tepid question, which way round or up, there's what I call the root end a flat top and a cut side, I assume the flat top is set almost level with the top of the soil.  The bit that looks like root obviously at the bottom?

Thank you I know it is a weird question but they don't look completely obvious which wy up!

I have taken them right out the packing I guess the pinkish white tips are new top growth so they should face up which means they will planted with a flat bottom see pic

Thank you Ema I'm not a complete idiot, honest! Just never handled crowns before and to plant something with a flat bottom is just plain weird thanksn

Well they have now gone in the ground, it wasn't too wet which surprised me , and looking round the site I've got them the right way up!!