In well-written sentences, define the difference between an Internal and External Project-Related Failure and why it is important to distinguish between the two. Please be insightful and detailed. Next, In well-written sentences, give a detailed example of an Internal and External Project-Related Failure. Be sure to fully explain how each one was discovered and what could have been done to avoid it from occurring. Finally, In well-written sentences, describe which one can be more expensive, and explain why you answered the way you did? Support your answer using a Project-Related Failure.