answer A, B and C PLEASE

Using the table below and assuming I1=8,I2=4,11=2, and 12=2.5 calculate the following using the general multi-index model: a. Expected returns. b. Variance of return. c. Covariance of return. Using the table below and assuming I1=8,I2=4,I1=2, and I2=2.5 calculate the following using the general multi-index model: a. Expected returns. b. Variance of return. c. Covariance of return