Which of the following matrices is a row matrix?

Which of the following matrices is a row matrix?

• A. [5 −2 8]
• B. [[1], [2], [3]]
• C. [[2, 0], [0, 2]]
• D. [0]

Answer: A) [5 −2 8]

Explanation: A row matrix has exactly one row and any number of columns. [5 −2 8] is a 1×3 row matrix. The second option is a column matrix, the third is a square matrix, and the fourth is a zero matrix of order 1×1.