Refer to this diagram to answer questions 1 through 10 . 1. Which of the following best describes the meaning of the multiplicities next to the number 1 in the preceding diagram? A. Stocks are traded in only one exchange. B. Stocks are traded in a minimum of zero exchanges. c. Stocks are traded in a maximum of many exchanges. D. Both "Stocks are traded in a minimum of zero exchanges" and "Stocks are traded in a maximum of many exchanges" are correct. 2. Which of the following best describes the meaning of the multiplicities next to the number 2 in the preceding diagram? A. Each exchange trades at least one stock. B. Each exchange trades a minimum of zero stocks. c. Each exchange trades a maximum of many stocks. D. Both "Each exchange trades at least one stock" and "Each exchange trades a maximum of many stocks" are correct. 3. Which of the following is true to implement the Stock Exchanges and Stocks classes and the association between them in the preceding UML class diagram in a database? A. The primary key of Stocks is a foreign key in Stock Exchanges. B. The primary key of Stock Exchanges is a foreign key in Stocks. c. The association between Stocks and Stock Exchanges is implemented as a linking table. D. Both "The primary key of Stocks is a foreign key in Stock Exchanges" and "The primary key of Stock Exchanges is