Angle made between vector $$\overrightarrow{C} = \overrightarrow{2i} - \overrightarrow{3j} + \overrightarrow{4k}$$ and the Z-axis

A

$$\frac{4}{\sqrt{29}}$$

B

$$\sin^{-1} \frac{4}{\sqrt{29}}$$

C

$$\cos^{-1} \frac{4}{\sqrt{29}}$$

D

$$\tan^{-1} \frac{4}{\sqrt{29}}$$