True or false: increasing the number of stocks in a portfolio reduces market risk. a) trueb) falseconsider two stock portfolios. portfolio a consists of four different stocks from firms in different industries. portfolio b consists of 10 different stocks, also from firms in different industries. the return on portfolio a is likely to be 1) (more or less) volatile than that of portfolio b. suppose a stock analyst recommends buying stock in the following companies: company industrytoyonda automotivesaalvo automotivegmw automotivehonsubishi automotiveshexxon oil and gasmobron oil and gasairing aircraftboebus aircraftgoohoo technologypherk pharmaceutica2) each of the following portfolios contains four of the stock picks. which portfolio is the least diversified? a) toyonda, honsubishi, boebus, airingb) boebus, airing, shexxon, mobronc) pherk, airing, goohoo, shexxond) toyonda, saalvo, gmw, honsubishi