G Problem 3. (3 points) Given a matrix A ∈ M3×4 with A     1 0 1 0     =   0 0 0   , A     0 0 1 1     =   0 0 0   , Which of the following statements must be TRUE? (I) The system Ax =   1 1 1   has infinitely many solutions. (II) The nullity of A is 2. (III) The rank of A is at most 2. (A) I only (B) II only (C) III only (D) II and III only (E) I, II, and III