Business debt is an example of a lagging indicator

In American politics, we often observe that during a campaign, the Democratic and Republican positions on many issues are similar, which illustrates

a. Arrow's impossibility theorem. b. the Condorcet paradox. c. a Borda count. d. the median voter theorem.

In which of the following ways is a monopolistically competitive firm like a perfectly competitive firm?

A. Short-run economic profits are always positive. B. Short-run economic profits may be positive, negative, or zero. C. Long-run economic profits are negative. D. Long-run economic profits are positive.