A spring stretches by 2 mm when it is loaded with a mass of 200 g. From equilibrium position the mass is further pulled down by 2 mm and released. The frequency associated with the system and maximum energy in the spring are __________ Hz and __________ J, respectively. (Take $$g = 10$$ m/s$$^2$$)

A

$$\dfrac{5\sqrt{50}}{\pi}$$ and $$8 \times 10^{-3}$$

B

$$\dfrac{5\sqrt{50}}{\pi}$$ and 8

C

$$10\sqrt{50}$$ and $$2 \times 10^{-3}$$

D

$$\dfrac{5\sqrt{50}}{\pi}$$ and $$16 \times 10^{-3}$$