Which of the following statements is true? Выберите один или несколько ответов: a. Collateral is a special type of security such as life-assurance policy or shares used to secure a bank loan. b. Junk bonds are high-yield, speculative bonds, often issued to finance the takeover of a corporation. c. Leveraged buyout is a situation where workers or management buy all the equity (or more than 50%), or buy other assets, and so gain control of a business. d. Buyout is a takeover of a company or controlling interest in a company, using a significant amount of borrowed money.