The Eigenvalues of the Matrix a of the Previous Problem $- 2 , - 2,3$

Multiple Choice

The eigenvalues of the matrix A of the previous problem are

A) $- 2 , - 2,3$
B) $2,2,3$
C) $1 \pm i , 3$
D) $- 1 \pm i , 3$
E) $1 \pm \sqrt { 3 } i , 3$