Students Were Presented with a Description of a Dispute Between

Students were presented with a description of a dispute between business interests and environmentalists (Eagly, et al.) over a company polluting a river. When they read a statement given by someone with a business background in support of the environmentalists, the students thought the speaker was more sincere:

A) but were not persuaded by his argument.
B) and were persuaded by his argument.
C) but did not find him more trustworthy.
D) but were more influenced by peripheral characteristics.