You are considering combining two risky portfolios, one made of stocks and another made up of cryptocurrencies. The following information is provided about the expected returns of each portfolio. [- a) If you decided to invest 30% in the stock portfolio and 70% in the cryptocurrency portfolio, what is the return of the new portfolio? (5) b) If the standard deviation of the crypto portfolio is 24%, calculate the standard deviation of the new portfolio containing stocks and crypto. (3) c) If the correlation coefficient of the new portfolio is 0,33 , comment on the overall risk of the portfolio. Do you think it is a good idea to combine these securities? (2)