Angle between the tangents to the curve $$y = x^2 - 5x + 6$$ at the points $$(2, 0)$$ and $$(3, 0)$$ is

A

$$\dfrac{\pi}{2}$$

B

$$\dfrac{\pi}{3}$$

C

$$\dfrac{\pi}{6}$$

D

$$\dfrac{\pi}{4}$$