The values of $$a$$ for which the two points $$(1, a, 1)$$ and $$(-3, 0, a)$$ lie on the opposite sides of the plane $$3x + 4y - 12z + 13 = 0$$, satisfy

A

$$0 < a < \dfrac{1}{3}$$

B

$$-1 < a < 0$$

C

$$a < -1$$ or $$a < \dfrac{1}{3}$$

D

$$a = 0$$