Answer:
B. 1×3
Step-by-step explanation:
Given the first matrix as [ 4 -1 0] this is 1×3 (row by column)
The second matrix is [2 1 0 ] which is a 3×3 matrix
[-3 -7 2 ]
[1 -5 2]
Hence the answer matrix will be;
[1×3 ] *[3×3]----------------------cancel the shaded numbers to remain with
[1×3]
