If $$5 \cos \theta = 4 \sin \theta, 0^\circ \leq \theta \leq 90^\circ$$, then what will be the value of $$\sec \theta$$?

A

$$\frac{\sqrt{41}}{5}$$

B

$$\frac{3}{5}$$

C

$$\frac{\sqrt{41}}{16}$$

D

$$\frac{\sqrt{41}}{4}$$