Coffee and tea are substitutes. Bad weather that sharply reduces the coffee bean harvest would

Coffee and tea are substitutes. Bad weather that sharply reduces the coffee bean harvest would
a. increase consumer surplus in the market for coffee and increase producer surplus in the market for tea. 

b. increase consumer surplus in the market for coffee and decrease producer surplus in the market for tea.
c. decrease consumer surplus in the market for coffee and increase producer surplus in the market for tea.
d. decrease consumer surplus in the market for coffee and decrease producer surplus in the market for tea.