Whatis the angle between the tangents to the curve $$x = t, y = t^2, z = t^3$$ at $$t = \pm1$$

A

$$\cos^{-1} \left(\frac{-3}{7}\right)$$

B

$$\cos^{-1} \left(\frac{1}{7}\right)$$

C

$$\cos^{-1} \left(\frac{3}{7}\right)$$

D

$$\cos^{-1} \left(\frac{-1}{7}\right)$$