What Started the 'Replication Debate

What started the 'replication debate'?

A) Researchers failing to provide good enough information about their studies so as to allow other people to repeat them.
B) Researchers who have repeated a published study have failed to find the same results as the original.
C) Researchers who have conducted the same study on a number of occasions have reported finding different results.
D) Researchers who have misreported their findings.