Other things being equal, how would the market for tablet computers be affected by a large increase in productivity in the tablet-computer industry?

A. A decrease in price and a leftward movement along the supply curve

B. A decrease in price and a rightward movement along the demand curve

C. A decrease in price and a rightward movement along the supply curve

D. An increase in price and a rightward movement along the demand curve

B. A decrease in price and a rightward movement along the demand curve