Using graphic simulations and conceptual frames, scientists projected the effects of almost negligible (about a pinch of salt per person per day), steady annual cutback of sodium in- take in the U.S. diet, cutting sodium consumption by 40 percent to about 2,200 mg/day over a decade. A gradual cutback in sodium intake by 40 percent to about 2,200 mg/day over a decade is projected to save between 280,000 and 500,000 lives. An even better result is pos- sible, and
about 60 percent more deaths could be averted over this decade if these same cutbacks could be achieved faster by upping the cutback amount (500,000 to 850,000 lives).
In the argument given above, the two boldface portions play which of the following roles?
(A) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is that main conclusion.
(B) The first is a prediction that, if accurate, would provide support for the argument; the second is a conclusion drawn in order to support that main conclusion.
(C) The first is an objection that the argument rejects; the second is the main conclusion of the argument.
(D) The first is an objection that the argument rejects; the second presents a conclusion that could be drawn if that objection were allowed to stand.
(E) The first is a claim that has been advanced in support of a position that the argument op- poses; the second is a claim advanced in support of the main conclusion of the argument.