A. Making the dress available only at select outlets
It could be plausible because that is a synonym for credible and means seeming reasonable
Faustus first began to believe that human salvation was impossible because he read the scripture and saw that all human beings sin and are D word.
In addition, he had been misled by Mephastophills, who caused him to misread the scriptures.
I would have to go with the first and last option, because they are the only ones that make sense to me.