Let $$A = \left\{x \epsilon R/x^2 < 9\right\}$$ and $$B = \left\{x \epsilon R/4 < x^2 < 16\right\}$$ then $$A \cap B =$$

A

$$(-3, -2) \cup (2, 3)$$

B

$$\phi$$

C

(2, 3)

D

(-3, -2)