[单选题]
95.18: The period of a spring-mass system undergoing si7ckqm 0ljz,(0w km3m wlccq;2rl3 st4- 4kewimple harmfdw8r24r-n/wfr : an yonic motion is T. If the amplitude of the spring-mass system’s motion is doubled, /w2wn rd:yrrfn-4f 8athe period will be: