answer question a, b-1 and b-2 please and thank you

P11-10. Returns and Standard Deviations Consider the following information: a. Your portfolio is invested 30 percent each in A and C and 40 percent in B. What is the expected return of the portfolio? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Expected return % b-1. What is the variance of this portfolio? (Do not round intermediate calculations. Round the final answer to 5 decimal places.) Variance b-2. What is the standard deviation? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Standard deviation %