[单选题]
The acceleration of gravity on th+;magu14nl.jflm+f u e Moon ib(r sugf+q(i )s one-sixth what it is on Earth. An objecqu(bf(gi r s)+t of mass 72 kg is taken to the Moon. What is its mass there?
A. $12 \; kg$
B. $72 \; kg$
C. $72 \; N$
D. $12 \; N$
