If *a* and *x* represent real numbers for which *x*^{2} = -*a*, which of the following statements could be true?

I. *a* > 0

II. *a* = 0

III. *a* < 0

(A) None

(B) II only

(C) III only

(D) I and II only

(E) II and III only

Level of Difficulty 1 2 3 4

Remember that anything squared (raised to the second power) cannot be negative - it can be either positive or zero. Therefore, only Roman numerals II and III represent correct statements, or choice E.

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