Part A-What I think Lamott means is that the first draft is something that won’t come as good as your third draft because on your first draft you begin to develop ideas. The first draft is to be creative and try to sharpen it as you do other draft. Lamott mentions how every writer starts off with a shitty draft and ends up with an amazing writing.
Part B- “Almost all good writing begins with terrible first efforts. You need to start somewhere. Start by getting something — anything — down on paper. A friend of mine says that the first draft is the down draft — you just get it down. The second draft is the up draft — you fix it up. You try to say what you have to say more accurately” This quote means that every first draft will not be amazing, it is when all your ideas are coming together into one paper. It will be messy but at the end when you know how to smoothly tell your story you will make more drafts to try and perfect it.
Part C- It is the truth of how perfect writing starts from a shitty draft. We all start somewhere and try to perfect it so others can be able to understand where we are coming from.