Please Find Both Mean and covariance for matrix

1.2 Machine learning algorithms often need to use the sample mean and sample variance. If you are given three observed examples in a sample: x1=202,x2=231,x3=233. Which of the following statements about either the sample mean or sample variance is CORRECT. (10 points) (a) The sample mean is 333. (b) The sample mean is 222. (c) The sample covariance matrix is 0000200032