[单选题]
When a proton passes throbr) o)za/mre nwz44,3dkn :-m ctsl6 eugh matter, jwx))3 hbou.u+3epumit is possible for it to interact with the matter in such a way that an electron and a positron buh+ )3e)ox.umwjp3 uare produced; this interaction is referred to as
A. the photoelectric effect.
B. the Compton effect.
C. pair production.
D. none of the given answers