Which of the Following Would Shift the Supply Curve for Coffee

Multiple Choice

Which of the following would shift the supply curve for coffee to the right?

A) An innovation in agricultural techniques that allows growers to produce coffee less expensively.
B) A late frost in Brazil that destroys 75% of its coffee bean crop.
C) An increase in the wages paid to coffee bean pickers.
D) A rise in the popularity of espresso,cappuccino,and other exotic coffee drinks.