Which of the following is inconsistent or unrelated with the efficient market hypothesis?

a. Changes in stock prices are impossible to predict from public information.

b. Asset prices reflect all publicly available information about the value of the assets.

c. Stock prices follow a random walk, so stock price movements should be impossible to predict.

d. The stock market moves based on the changing animal spirits of investors.

e. The stock market is informationally efficient.

f. It is impossible to systematically beat the market.