Background Removal in Davinci Resolve

I have a 2-minute clip of spokesperson against a white background but there were a few wrinkles in the cloth and they are noticeable. The subject is in one location and there is not movement. I would like to have the background replaced with a white background that is free from blemishes as well as have it to where we could replace the background with something else if we choose to do so (transparent). I have the project in DaVinci and would like to keep it that way so if you can send the project files back that would be great.