What is the variance of a portfolio invested 18 percent each in A and B and 64 percent in C? (Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.)

I have the first part right as I was able to check, but I can not seem to get B right and I used both of my "Check to see if you're right" options so I'm resorting to your help. Hopefully some one can show me how to get this one. Thank you in advance!

Consider the following information: Rate of Return If State Occurs State of Economy Boom Bust Probability of State of Economy Stock C .38 07 Stock A .54 .46 .12 .14 Stock B .20 .04 a. What is the expected return on an equally weighted portfolio of these three stocks? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Expected return 14.29 % b. What is the variance of a portfolio invested 18 percent each in A and B and 64 percent in C? (Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 32.161616.) Variance