If $$\cosec A + \cot A = 3, 0 \leq A \leq 90^{\circ}$$ , then find the value of $$\cos A$$.

A

$$\cfrac{3}{4}$$

B

$$\cfrac{2}{5}$$

C

$$\cfrac{3}{5}$$

D

$$\cfrac{4}{5}$$