According to the trade-off theory that has been suggested as a possible explanation for the differences in firms' capital structures that we observe in the real world, which of the following securities is the least expensive form of financing for a particular firm?a. Preferred stockb. Retained earningsc. Corporate debtd. Classified stocke. Common stock

What is the relationship between marginal external cost, marginal social cost, and marginal private cost? a. marginal social cost equals marginal private cost plus marginal external cost. b. marginal private cost plus marginal social cost equals marginal external cost. c. marginal social cost plus marginal external cost equals marginal private cost. d. marginal external cost equals marginal private cost minus marginal social cost. marginal external cost a. is expressed in dollars, so it is not an opportunity cost b. is an opportunity cost borne by someone other than the producer c. is equal to two times the marginal private cost d. is a convenient economics concept that is not real

If the findings and the results are not presented properly, the research completed was a waste of time and money. true false

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