You invested 17 per cent of your portfolio in an investment with an expected return of 15 per cent and 83 per cent of your portfolio in an investment with an expected return of 5 per cent. What is the expected return of your portfolio? (as a percentage to two decimal places; eg 2.881% is 2.88)) Select one: a. 6.70% b. 13.30% c. 19.15% d. 6.20%