Carvania is known to have a greater number of auto fatalities per capi

Carvania is known to have a greater number of auto fatalities per capita than is the neighboring province of Cheviraul. Nonetheless, the number of collisions per capita that result in whiplash injuries is less than half those per capita of neighboring Cheviraul. While such a finding implies that accidents occurring in Cheviraul are more likely to result in whiplash, there is another fact that should not be overlooked: unlike insurance providers in Cheviraul, those in Carvania do not pay premiums for automobile accident-related whiplash. Because many incidents of whiplash apparently go unreported in Carvania, the actual number of incidents of whiplash in Carvania may be equal to, if not more than, the number of whiplash incidents in Cheviraul.

In the argument given above, the two portions in boldface play which of the following roles?
A. The first is a claim that challenges the main conclusion; the second is the main conclusion.
B. The first is a judgment made by the argument about a certain explanation; the second is that explanation.
C. The first is an observation that calls into question an observed phenomenon; the second is the main conclusion of the argument.
D. The first is a claim that the argument sets out to prove; the second limits the extent of this claim.
E. The first is an intermediate conclusion; the second is the primary conclusion.