Which of the following statements is correct for weak form efficient capital markets? Select one: a. Stock prices already reflects all information contained in past prices and trading volumes b. The statistical analysis of past trading behaviours of investors can lead to abnormal returns for skilled investors c. Technical analysts carefully studies all publicly available information on a company for deep insights and trading excessive returns d. The fundamental analysis of past price movements and trading behaviours can lead to abnormal returns e. A senior manager or member of a corporate board has a trading advantage relative to outside investors