Unless you're a "lifestyle business" (which YC wouldn't accept) you should be a C Corp. See <a href="https://www.quora.com/Should-a-tech-startup-incorporate-as-an-LLC-a-C-Corp-or-an-S-Corp-If-so-why" rel="nofollow">https://www.quora.com/Should-a-tech-startup-incorporate-as-a...</a>