Which of the following was sanctioned by the Zimbabwe government in January 2009 as a substitute currency?

A best response is ________

A) one player's optimal action choice irrespective of the action of the other player B) one player's optimal action choice taking the other player's action as given C) an action choice that always results in a zero payoff to the opponent D) an action choice that results in equal payoffs to all the players in a game

The elasticity of demand for a product is likely to be greater

A) the smaller the number of substitute products available. B) the smaller the proportion of one's income spent on the product. C) the larger the number of substitute products available. D) if the product is an imported good rather than a domestically produced good.