If markets are semistrong-form efficient, which of the following statements is true? O a. Passive portfolio management strategies are most likely to earn abnormal returns. O b. Using technical analysis will most likely generate abnormal returns. O c. Active portfolio management strategies are most likely to outperform passive trading strategies. O d. Active portfolio management strategies are most likely to earn superior returns. Oe. Passive portfolio management strategies are most likely to outperform active trading strategies