[单选题]
Is it possible for a sys fcj,eox 4k-o(i 2j7lgtem to have negative potential enex-* k saidt.usek *n5e5;7ztprgy?
A. Yes, as long as the total energy is positive.
B. Yes, since the choice of the zero of potential energy is arbitrary.
C. No, because the kinetic energy of a system must equal its potential energy.
D. No, because this would have no physical meaning.
