[单选题]
A mass oscillates onk-f6( k)nvy 2imaeh/w the end of a spring, bothlkz* ee qqsi30:kd z)/ on Earth and on the Moon. Where is the period the greaek0)s/ie* q k dzz3l:qtest?
A. Earth
B. the Moon
C. same on both Earth and the Moon
D. cannot be determined from the information given
