[单选题]
A mass oscillates on the end of ngks ugl5 +,ob4 .mm5ia q7uv44 y3dtgymg:yl6ru nu /+ spring, both on Earth and on the Moon. Where is the period the gre:lyn3 md g4/q7t ruuuy4+gv6yatest?
A. Earth
B. the Moon
C. same on both Earth and the Moon
D. cannot be determined from the information given
