A} For a retail investor who would like to participate in the stock market, does it matter whether the}r choose to hold an ETF or a mutual index fund? What drives the decision when choosing between the two instruments? Please respond in no more than 5 lines. (3 points) B) Do ETFs increase volatility in markets? Why? Please respond in no more than 10 lines. ('3' points) C) \"lthy,F is there a strong theoretical reason for holding an ETF, according to the theor},r covered in lecture? Please respond in no more than 6 lines. (4 points} D} How can sector ETFs improve the pricing of rms that are part of that sector? Please respond in no more than 3 lines. {4 points]