(Choose 1 answer)
Let A be a 3x7 matrix of rank 2. Which of the following statements are true?
(i) A has 2 independent rows
(ii) A has 5 independent columns
(iii) The null space of A has dimension 2
A. (0)
B. (ii)
C. (iii)
D. (i) and (iii)
E. None of the other choices is correct
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