Which of the following assertions regarding the 2008 bankruptcy of Lehman Brothers is true?

A. On September 15, 2008, Lehman Brothers filed for bankruptcy. At the time, Lehman was the fourth-largest investment bank in the US and focused on trading US Treasury securities.

B. Repo 105 is how Lehman Brothers referred to the accounting technique it employed to label a short-loan as a sale. Following the release of the business's financial results, the corporation borrows money and buys back the securities, using the proceeds from this "sale" to pay off debt.

C. At the conclusion of each quarter,Lehman management frequently utilized cosmetic accounting tricks (Repo 105) to make the company's finances seem less precarious than they actually were.

D. A worldwide financial crisis was brought on by Lehman Brothers' collapse.

E. All statements are true.