What are the domain restrictions of a+2/ a^2 - 3a - 18?

A: a ≠ -2, a ≠ 3, a ≠ -6

B: a ≠ 3, a ≠ -6

C: a ≠ 2 , a ≠ -3, a ≠ 6

D: a ≠ -3, a ≠ 6

a² - 3a - 18 = 0 (a - 6)(a + 3) = 0 a = 6 or a = -3. So the correct choice is the third one.

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