Wait, is this a trick question? I mean, come on, the options are just a bunch of random numbers. I'm going to go with Option C just to see what happens.
Haha, these options are like a game of 'guess the number'! I'll go with Option A just to be different. Who knows, maybe the exam writer is feeling a bit mischievous today.
I think Option D is the right answer. The matrix looks like it has a symmetric structure, and the eigenvalues of a symmetric matrix are always real numbers.
Option B seems correct to me. The eigenvalues of a matrix are the values that make the determinant of the matrix equal to zero. Looks like -2 satisfies that condition.
Idella
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