You invested $11,000 in a portfolio with an expected return of 5.6 per cent and $23,000 in a portfolio with an expected return of 13.7 per cent. The expected return of the combined portfolio is (as a percentage to two decimal places eg 2.881% is 2.88)) Select one: O a. 11.08% O b. 6.10% O c. 13.06% O d. 11.45%