Business Type Choice

I am just starting out my journey in Amazon FBA and have got to the point where I need to input my business type. The options are “State-owned business”, “Publicly-listed business”, “Privately-owned business”, “Charity”, or “None, I am an Individual”.
As someone who is completely new to this (No LLC or anything of the sort), am I supposed to sign up as individual or can I choose privately owned business? I plan to get an LLC at some point (still undecided if I do so right now or a bit down the line, any advice here as well?).
I have read somewhere that signing up as an individual will only allow me to sell second hand things, things that are used and no longer wanted. I plan to sell new products, therefore I am very confused about this situation.
Any advice helps! Thanks