Option D:
The dimensions of the matrices don't align properly to find their sum.
Solution:
Given data:
Dimension of matrix = Number of rows × Number of columns
Dimension of matrix is 2 × 1
Dimension of matrix is 2 × 2
Here, we have to add the two matrices.
<em>The dimension of the matrices must be same to add or subtract matrices.</em>
Here the dimensions are 2 × 1 and 2 × 2.
The dimensions are not same.
Hence we can't find their sum.
Option D is the correct answer.
The dimensions of the matrices don't align properly to find their sum.