A stock portfolio has an expected return of 11.50% and a standard deviation of 19.75%. A bond portfolio has an expected return of 5.30% and a standard deviation of 7.60%. The correlation between the stock and bond portfolios is 0.2. What is the standard deviation of the complete portfolio if you invested your money equally in the stock portfolio and the bond portfolio?

a. 13.68%

b. 4.80%

c. 11.27%

d. 8.00%

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