[单选题]
One reason a photon could not create g yn;w/ns(3n hsy t:no-.*ifxan odd numbqn zh/;85l zkdu0qbb6 f* 2hgr72 bxbher of electrons and positrons is that such fh5z76b ;h2dqkx28rqngu /bzhlb * 0b a process would
A. not conserve charge.
B. not conserve energy.
C. require photon energies that are not attainable.
D. result in the creation of mass.
Post time 2024-1-22 02:15:01