Solve the problem.If the null space of a 5 × 7 matrix is 3-dimensional, find Rank A, Dim Row A, and Dim Col A.
A. Rank A = 4, Dim Row A = 4, Dim Col A = 3
B. Rank A = 4, Dim Row A = 4, Dim Col A = 4
C. Rank A = 2, Dim Row A = 2, Dim Col A = 2
D. Rank A = 4, Dim Row A = 3, Dim Col A = 3
Answer: B
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