Which of the following statements is true?
A. Elasticity of demand is greater in the short run than in the long run.
B. The larger the share of a person's total budget that is spent on a commodity, the greater that person's price elasticity of demand for that commodity.
C. The closer the substitutes for a particular commodity and the more substitutes there are, the more inelastic the​ commodity's price elasticity of demand.
D. The elasticity of demand in the short run is the same as in the long run.
E. All of the above