select quantity per option

Hi,

What you want to use here is not options but a characteristic with three values (one for each bottle size) that you add to your product as characteristic and then set the prices of each variant of the product via the "manage variants" button.
Then, you set the "characteristics display method" option of the configuration to "list" and the "Display the quantity field on the product page" option "global on listings".
That will then display a table of the variants of the product on the product page, each one with a quantity box and a global add to cart button for them.