Which of these is a property of the rank of a matrix?
rank(A)=rank(AT)rank(A) = rank(A^T)rank(A)=rank(AT)
rank(A+B)=rank(A)+rank(B)rank(A+B) = rank(A) + rank(B)rank(A+B)=rank(A)+rank(B)
rank(AB)=rank(A)×rank(B)rank(AB) = rank(A) \times rank(B)rank(AB)=rank(A)×rank(B)
Rank is the number of zero rows