Which selectors for dropdown menu?

How to?
#1

Describe the problem.

which selector to use for dropdown menu? i.e quantity

Url: https://www.uniqlo.com/au/store/men-premium-linen-long-sleeve-shirt-4080070058.html

Sitemap:
{id:"sitemap code"}

#2

I ended up using the HTML type and then am using this RegEx to extract the currently selected option:
(?<=selected="selected">)(.*?)(?=)