Select the best description of the Lean Startup method. a. The Lean Startup is a process for building a viable business model that relies on experimentation and tolerates failure when necessary. b. The Lean Startup is about experimenting to succeed; it tolerates failure but would rather avoid it to keep costs low. c. The Lean Startup is a method for discovering a viable business model, relying on experimentation, tolerating failure, and responding with quick action