What following pieces are needed for this photosynthesis equation. Please tell me which H, C, and O’s go

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Ineed with this same question!

Value is 6 i think k