please watch the video and answers the questions video: https://youtu.be/Ek4fRk6S7aQ 1.What are the four key steps in the lean startup Methodology by Eric Ries? 2.Why is it so important to fist start with the Problem Definition? 3.What is the idea of an MVP? 4. In your company for what business problem do you think the lean start-up Methodology would be ideal to get better results?