[单选题]
A mass oscillates on the end of a spring,ar-e/*e4dy*e,*xb x9 q ldodk,i*zjm both on Earth and on *+1/ ymyi iurjthe Moon. Where is the perrmi y1+u /yij*iod the greatest?
A. Earth
B. the Moon
C. same on both Earth and the Moon
D. cannot be determined from the information given
