Olivers portfolio holds security A, which returned 12.0%, security B, which returned 15.0% and security C, which returned 5.0%. At the beginning of the year 45% was invested in security A, 25.0% in security B and the remaining 30% was invested in security C. The correlation between AB is 0.75, between AC 0.35, and between BC 0.5. Securities As standard deviation is 12%, security Bs standard deviations is 15% and security Cs is 10%. Calculate the expected return of Olivers Portfolio, the portfolio variance and standard deviation.