Bloomberg Personal Finance includes the following companies in the portfolio of investments it recommends. Below are the dollar amounts they assign to each stock in a portfolio worth $25,000. Value in Growth portfolio rate Return Citigroup 3000 15 1.21 General Electric 5500 14 1,48 Kimberly- Clark 4200 12 1.72 Oracle 3000 25 0 Pharmacia 3000 20 0.96 SBC 3800 12 2.48 WorldCom 2500 35 a. Using the amount of dollar of each asset inthe portfolio as weights, what is the weighted average growth rate of the portfolio? b. What is the weighted average return of this portfolio? c. Compare both weighted averages with the simple averages, why are they different