A weighing $$\frac{m}{c}$$ consists of a 2 kg pan resting on a spring having linear characteristics. In this condition of resting on the spring, the length of spring is 200mm. Whena20 kg massis placed _on the pan,the length of the spring becomes 100mm. The undeformed length Lin mm and the spring stiffness K in $$\frac{N}{m}$$are

A

L=220 & K=1862

B

L= 200, K = 1960

C

L=210, K= 1960

D

L= 200, K=2