A spring of spring constant 200 N `m^(-1)` has a block of mass 1 kg hanging at its one end and from other end spring is attached to a ceiling of an elevator. The elevator rising upwards with an acceleration of g/3. when acceleration is suddenly cease, then what should be the angular frequency and elongation during the time when the elevator is acceleration ?
A. `14.14"rad "s^(-1),0.07m`
B. `13"rad "s^(-1),0.1m`
C. `14"rad "s^(-1),0.05m`
D. `10"rad "s^(-1),0.07m`