Please answer the question

Given the returns and probabilities for the three possible states listed below, calculate the covariance between the returns of Stock A and Stock B. For convenience, assume that the expected returns of Stock A and Stock B are 5.50 percent and 10.00 percent, respectively. (Round answer to 4 decimal places, e.g. 0.0768.) Return on Stock A Return on Stock B Probability Good 0.30 0.30 0.50 OK 0.40 0.10 0.10 Poor 0.30 -0.25 -0.30 Covariance