What Skeptical Argument Against Transubstantiation Was Offered by Berengar of Tours

What skeptical argument against transubstantiation was offered by Berengar of Tours?

A) People could not distinguish between consecrated and unconsecrated bread and wine.
B) Since God did not exist,there was no way that transubstantiation could occur.
C) God operated in a "hands-off" manner and did not perform acts such as transubstantiation.
D) It was sacrilegious to suggest that one could be consuming the body and blood of Christ.
E) Bread is bread and wine is wine and nothing can change that,not even God.