28. An investor should do which of the following for stocks with negative alphas? A. go long B. sell short C. hold D. do nothing 29, You believe that stock prices reflect all information that can be derived by examining marke trading data such as the history of past stock prices trading volume, or short interest, but you do not believe stock prices reflect all publicly available and inside information. You are a proponen of the form of the EMH. A. semistrong B.strong C.weak D.perfect