The returns of the stocks over the last year in a large portfolio follow a distribution that is approximately normal. An unethical analyst removes some of the very worst performing stocks and produces reports d on the altered portfolio returns. Which of the following statements about the returns of the altered portfolio is/are correct? I The distribution of returns of the altered portfolio is likely to be positively skewed II The distribution of returns of the altered portfolio is likely to be negatively skewed III The mean return is likely to be lower compared to the original portfolio IV The median return is likely to be higher compared to the original portfolio A. I only is correct B. II and III are correct C. II and IV are correct D. I and IV are correct