If the early start for an activity is 7 and the late start is 12, then the activity's slack is 84

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Which of the following is an advantage of issuing corporate bonds over obtaining a long-term loan?

a. Corporations usually have a shorter repayment period for issued corporate bonds than for a long-term loan. b. All businesses can issue corporate bonds, while only a few large corporations can obtain long-term loans. c. A corporate bond can always be changed into shares of the corporation's common stock. d. Corporations can borrow a lot of money from a lot of different bondholders and raise larger amounts of money than could be borrowed from one lender. e. Corporations do not have to pay any interest when issuing bonds in a healthy economy.