Hot Coals Paving Co. has recently shifted at least partly from traditional asphalt formulas that include high levels of petrochemicals to environmentally safer ones based on biodegradable products. The question has been raised whether it can be determined that
for a given paved surface Hot Coals now causes fewer petrochemicals to be introduced into the environment than were introduced previously. The response,undoubtedly, is yes, since the amount of biodegradable sealant needed to create a smooth roadway surface is equal to the amount of petrochemical-based sealant, provided that all other conditions are equal.
In the argument given, the two boldfaced portions play which of the following roles?
(A) Each provides support for the conclusion of the argument.
(B) The first provides support for the conclusion of the argument; the second calls that conclusion into question.
(C) The first states the conclusion of the argument; the second calls that conclusion into question.
(D) The first provides support for the conclusion of the argument; the second identifies the content of that conclusion.
(E) The first identifies the content of the conclusion of the argument; the second provides support for that conclusion.