If v is an eigenvector of an invertible matrix A, then which of the following is I are necessarily
true?
I. v is also an eigenvector of 2A.
II. v is also an eigenvector of A^2.
III. v is also an eigenvector of A^(-1).
(A)I only (B)II only (C)III only (D)I, II, and III
D