[单选题]
A package of supplies is dropped from a plane, and one secb;3 *q mo*tk.t qw4xrqond later a secon/ s jxzk;j1,hdd package is dropped. Neglecting air resistancz xk 1/j;h,sjde, the distance between the falling packages will
A. be constant.
B. decrease.
C. increase.
D. depend on their weight.
