Overall support for the weak form of the EMH is ______

A. very strong and suggests that increased risk-adjusted returns are unlikely using historical price information to make trading decisions.
B. weak because several studies show that it is possible to form a number of profitable trading rules.
C. weak, based on the presence of P/E ratio and book value anomalies
D. weak, based on the presence of several calendar anomalies.

Correct Answer: A

The weakform is strongly supported by the research. P/E ratios and calendar anomalies are not relevant to weak-form tests.