A financial analyst runs a comprehensive study using 600 months of return data for an equity market. She finds that portfolios constructed by investing in companies that increase their dividend payment by more than 10%, in companies that fire their chief executive for incompetence, in companies that sponsor professional golf tournaments, and in companies that improve their current ratios generate the same return as a benchmark with similar risk. The analyst is most likely to conclude that the market is:

A. Inefficient

B. Weak from Efficient

C. Semi-strong Efficent

D. Strong form efficent