The relation between the period of a simple pendulum 'T' and its length 'L' is ..............(‘g' is acceleration due to gravity)

A

$$T=2\pi\sqrt{(\frac{L}{g})}$$

B

$$T=4\pi\sqrt{(\frac{g}{L})}$$

C

$$T=4\pi\sqrt{(\frac{L}{g})}$$

D

$$T=2\pi\sqrt{(\frac{g}{L})}$$