Which of the following is the main disadvantage of using shells as money instead of coins?

"Insider trading" laws are meant to prevent

A) the executives of a corporation from holding a majority of its outstanding shares. B) buying or selling shares based on information not available to the public. C) foreign investors from gaining controlling interest in U.S. corporations. D) the issuing of bonds for the purpose of buying stock.

The price elasticity of demand for a variable input will be more elastic in all the following cases EXCEPT

A) the greater the price elasticity of demand for the final product. B) the easier it is for a particular variable input to be substituted for by other inputs. C) the larger the proportion of total costs accounted for by a particular variable input. D) the shorter the time period being considered.