[单选题]
If you take a given d (sw6 yw8zxga8tu*; qpendulum to the Moon, where the accelerationi h dbyp;2.rapn4jw,1 of gravity is less than on Earth, the resonant frequencnb.,r2 14 pi yph;ajwdy of the pendulum will
A. increase.
B. decrease.
C. not change.
D. either increase or decrease; it depends on its length to mass ratio.
