Consider the matrix $\mathbf{A}$ defined as:

$\mathbf{A} = \begin{pmatrix} 8 & 1 & 6 \\ 3 & 5 & 7 \\ 4 & 9 & 2 \end{pmatrix}$

If the notation $a_i \in \mathbf{A}$ is used to indicate that $a_i$ is a row vector from the matrix $\mathbf{A}$, which of the following statements is true?

Given the matrix $\mathbf{M} = \begin{pmatrix} 5 & 2 & 9 \\ 1 & 7 & 3 \\ 8 & 4 & 6 \end{pmatrix}$, and using the notation where $m_i \in \mathbf{M}$ indicates that $m_i$ is a row vector from $\mathbf{M}$, the statement $m_2 = \begin{pmatrix} 2 \\ 7 \\ 4 \end{pmatrix}$ is true.

Identifying a Row Vector