Suppose there are two stocks and two possible states. The first state happens with 80% probability and second state happens with 20% probability. In the first state, stock A has 0% return and stock B has 2% return. In outcome 2 , stock A has 40% return and stock B has 18% return. What is the covariance of their returns? (Please convert all percentages to numbers) If you submit a decimal please include four decimal places