Because all the other letters are not c's. *** *ba dum tss*
Because other alphabets were
F.B.I.
A hissy fit. ba dum tss.
Ba-dum-tss
A change is as good as a rest !
I rest my case.
They are all "Not-C's" !
It could be R and the C, but they definitely aren't OC.
Black mail !
Pen Gwyn !