[单选题]
A mass oscillates on thg)tkc98 9kuo ce .f 0hhnxy: +jb*c9 abkend of a spring, both on Earth and on the Moon. Where is the pb.kx:f j hynb9ah *c0+eriod the greatest?
A. Earth
B. the Moon
C. same on both Earth and the Moon
D. cannot be determined from the information given
