Why Do Airlines Tend to Lower Ticket Prices in the Winter

Multiple Choice

Why do airlines tend to lower ticket prices in the winter?

A) Supply is relatively variable, and a drop in demand lowers equilibrium price
B) Demand is relatively variable, and a drop in supply lowers equilibrium price.
C) A drop in both supply and demand lowers equilibrium price.
D) Supply is relatively fixed, and a drop in demand lowers equilibrium price.
E) Demand is relatively fixed, and a drop in supply lowers equilibrium price.