The horizontal summation of all individual demands at different given prices results in the

Advocates of the public-choice view argue that elected officials

a. will always respond to inflation with expansionary policies but will respond to unemployment with restrictive policies. b. will actively respond to inflation with restrictive policies but are reluctant to respond to unemployment with expansionary policies. c. will always respond to both inflation and unemployment with expansionary policies. d. None of the above

Historically, which of the following goods have evolved into money?

A) gold B) salt C) cattle D) cocoa beans E) all of the above