If AAA is a 3×33 \times 33×3 matrix such that A2=0A^2 = 0A2=0, what can be said about the rank of AAA?
rank(A)≤1\text{rank}(A) \leq 1rank(A)≤1
rank(A)=2\text{rank}(A) = 2rank(A)=2
rank(A)=3\text{rank}(A) = 3rank(A)=3
rank(A)=0\text{rank}(A) = 0rank(A)=0 only