Among other crimes committed in those parts you have mentioned this, that certain of the faithful sell their slaves to the pagans for sacrifices. Which thing, brother, we think should be corrected, and we do not think you should allow it to proceed further; for it is a disgrace and an impiety. To those therefore who have done these things you should mete out the same punishment as for homicide.” –Pope Gregory III, 731
Source: J. P. Migne, ed., Patrologiae Cursus Completus, (Paris, 1850), Vol. LXXXIX, p. 578; reprinted in Roy C. Cave & Herbert H. Coulson, A Source Book for Medieval Economic History, (Milwaukee: The Bruce Publishing Co., 1936; reprint ed., New York: Biblo & Tannen, 1965), p.284.

Which of the following statements is supported by the quotation above?

By the eighth century, Christianity had completely replaced other religions in Europe.
Pope Gregory III had very little power in Europe.
Christians and non-Christians conducted business with each other in the eighth century.
The Church declared slavery a sin in the eighth century.