[单选题]
A mass oscillates on the end of a spring, both on Ea3)ibmn xt5 w8k9y8q irrth and 7jwf9 ht wd*x,gjpvlysg ;,4 xt58xp/ on the Moon. Where gj 7, ;t/* 8,hf5jsvg pwl9xxwy ptxd4is the period the greatest?
A. Earth
B. the Moon
C. same on both Earth and the Moon
D. cannot be determined from the information given
