For each of the following, determine (i) the market in question; (ii) whether a shift in demand or supply occurred, the direction of the shift, and what induced the shift; and (iii) the effect of the shift on the equilibrium price and the equilibrium quantity.

a. As US. gasoline prices fell during the 1990s, more people bought large cars.

b. As technological innovation has lowered the cost of recycling used paper, fresh paper made from recycled stock is used more frequently.

c. When a local cable company offers cheaper on-demand films, local movie theaters have more unfilled seats.