Which would be an appropriate investment for temporarily idle corporate cash that will be used to pay quarterly dividends three months from now?

• A. A long-term AAA-rated corporate bond with a current annual yield of 9.4 percent.
• B. A 30-year Treasury bond with a current annual yield of 8.7 percent.
• C. Ninety-day commercial paper with a current annual yield of 6.2 percent.
• D. Common stock that has been appreciating in price 8 percent annually, on average, and paying a quarterly dividend that is the equivalent of a 5 percent annual yield.