Determine the Size of Matrix a and Tell Whether It $$A = \left[ \begin{array} { l l l l } 3 & - 3 & 9 & 7\end{array} \right]$$

Multiple Choice

Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.
- $$A = \left[ \begin{array} { l l l l } 3 & - 3 & 9 & 7\end{array} \right]$$

A) 4 × 1; column matrix
B) 1 × 4; row matrix
C) 1; square matrix
D) 4; row matrix