Which of the following magnitudes is constant over all units of output? a. the private cost of the last unit of output that was produced and sold b. the social value of the last unit of output that was produced and sold c. the private value of the last unit of output that was produced and sold d. the external benefit of the last unit of output that was produced and sold

How does a bond differ from a stock? select all that apply. a bond is issued for a certain amount, while a stock is a small part of ownership in a company a bond is usually issued by a government, while a stock by a public for profit company a bond is something you keep forever, while a stock you can buy and sell whenever you want a bondholder receives interest from the bond-issuer, while a stock holder receives nothing until they sell the stock a bond is considered a safer investment, while a stock is considered riskier