[单选题]
What happens to a simple yqf7r2xlt1;uo- tw8 dpend.lerc:4u2yh wsg9w )q ulum's frequency if both its length and mass are increagl s29hcewr :yqw4.u) sed?
A. It increases.
B. It decreases.
C. It remains constant.
D. It could remain constant, increase, or decrease; it depends on the length to mass ratio.
