A second pendulum is shifted from a plane where `g = 9.8 m//s^(2)` to another place where `g = 9.82 m//s^(2)`. To keep period of oscillation constant its length should be
A. decreased by `(2)/(pi^(2))cm`
B. increased by `(2)/(pi^(2))cm`
C. increased by `(2)/(pi)cm`
D. decreased by `(2)/(pi)cm`
