Suppose that research shows that by buying stocks issued by companies whose names begin with the letter G investors can earn above-normal returns in even-numbered years.

a.From the perspective of the efficient markets hypothesis, this is further evidence that the hypothesis is correct.

b.this would be considered evidence that the hypothesis is incorrect.

c.investors must have insider information on these companies.

d.purchasers of these stocks must have been speculators.

update: what is the asnwer, why?