[单选题]
One reason a photon could not create an ah 9oj1dh)r0 todd number of elect.ss o(mj*o1xj6+ygzt )zy 4 fsrons and positrons is that such a process wozytj.zsxo+j 6y1f( m )o*4gssuld
A. not conserve charge.
B. not conserve energy.
C. require photon energies that are not attainable.
D. result in the creation of mass.