after analyzing data of 1000 stocks, you discover that you can make greater than normal returns by buying shares of stocks in firms that attained the highest return in the most recent three months

a. this is a violation of all forms of market efficiency

b. this is a violation of weak for inefficiency

c. this is not a violation of market efficiency

d. this is a violation of semi-strong form efficiency

e. this is a violation of strong-form efficiency