Economists pay special attention to making choices at the margin

Yesterday the futures price for corn for March delivery in Chicago was $7.40/bushel and today it is $7.30/bu. Yesterday the local cash price was $6.87/bushel. Yesterday the local basis was

A. 57 cents. B. -53 cents. C. -43 cents. D. 53 cents.

Governments and central banks can track virtual currencies and gain considerable control over their use if:

a. Virtual currency transactions are only among domestic residents (i.e., no foreign-related transactions). b. Virtual currency transactions are only between domestic and foreign residents. c. Virtual currency transactions are recorded (i.e., debited and credited) in clearing houses. d. Virtual currency transactions are peer-to-peer rather than through clearing houses.