Babe Ruth,the Famous Baseball Player,earned $80,000 in 1931

Babe Ruth,the famous baseball player,earned $80,000 in 1931.Today,the best baseball players can earn more than 300 times as much as Babe Ruth earned in 1931.However,prices also have risen since 1931.We can conclude that

A) the best baseball players today are about 300 times better off than Babe Ruth was in 1931.
B) because prices have risen also, the standard of living of baseball stars hasn't changed since 1931.
C) one cannot make judgments about changes in the standard of living based on changes in prices and changes in incomes.
D) one cannot determine whether baseball stars today enjoy a higher standard of living than Babe Ruth did in 1931 without additional information regarding increases in prices since 1931.