A particle performing S.H.M undergoes displacement of `A//2` (where A = amplitude of S.H.M.) in one second. At `t = 0` be the particle was located at either position or mean position. The time period of S.H.M. can be : (consider all possible cases)
A. 12s
B. 2.4
C. 6s
D. 1.2s
