Suppose A is a 3 × 3 matrix such that det(A − λI) = −λ^3 + 3λ^2 + λ − 3, where I is the 3 × 3 identity matrix. Which of the following are TRUE of A?
I. The trace of A is 3.
II. The determinate of A is −3.
III. The matrix A has eigenvalues −3 and 1.
(A)I only (B)II only (C)III only (D)I and II only
D