Which of the following would provide evidence against the weak form of the efficient-market hypothesis? a. Fund managers generate persistent alpha by constructing a long-short portfolio based on firm P/E ratio b. fund managers generate persistent alpha by following firms' quarterly earnings announcement c. fund managers generate persistent alpha by trading on the quarterly earnings information from their clients before the information is publicly disclosed d. fund managers generate persistent alpha by following momentum strategy Which of the following would provide evidence against the weak form of the efficient-market hypothesis? a. Fund managers generate persistent alpha by constructing a long-short portfolio based on firm P/E ratio b. fund managers generate persistent alpha by trading on the quarterly earnings information from their clients before the information is publicly disclosed c. fund managers generate persistent alpha by following firms' quarterly earnings announcement d. fund managers generate persistent alpha by following momentum strategy