This is close between C and E
but I am going to say E for two reasons
1. The author seems to think the fraud is obvious and cotends that the publishers just care about seeling copies.. i.e. publishers igonore the fraud so he is indeirectly assuming publisher is resposible for whatever is printed
2. choice C says "everything" must be verifiable. the use of everything here is too strong
sigep whats the OA?
Agree with damit. E should be it.