help me with 1 - 3 please

1. Find the size of the matrix. Identify a square, column, or row matrix. Give the additive inverse of the matrix. -5 7 -9 6 8 1 The size of the matrix is x The matrix is (1) The additive inverse of the matrix is (1) O a column matrix. Q a row matrix. Q a square matrix. Q of no special type. 2. Perform the indicated operation, if possible. 4 9 7 -7 + 9 0 - 11 1 64110 27 912 Select the correct choice below and, if necessary, ll in the answer boxes to complete your choice. 0 A. The resulting matrix is O B. The matrices cannot be added. 3. Perform the indicated operation if possible. 139 51 615'-27 1014 26 Select the correct choice below and, if necessary, ll in the answer box to complete your choice. 0 A. The resulting matrix is . (Simplify your answer.) Q B. The resulting matrix does not exist because the operation is not possible