please answer question

Case Study\#1 Arthur Anderson Arthur Andersen (AA) was an American accounting firm based in Chicago that provided auditing, tax advising, consulting and other professional services to large corporations. By 2001, it had become one of the world's largest multinational corporations and was one of the "Big Five" accounting firms (along with Deloitte \& Touche, Ernst \& Young, KPMG and PricewaterhouseCoopers). Kindly refer to Wikipedia, Google and any other sources to answer the following question: 1. Does AA still exist? Who are they now? 2. Explain the problem of AA in details. 3. Why was AA found liable? 4. How much does AA lose