GMAT Critical Reasoning (CR) | The traditional treatment of strep infections has been a

Got this question wrong in the when I got it in my practice test. I marked (B) but I realized my mistake after reading other posts in the forum.

There are two problems with (B):

1) Even if cost was a concern, (B) still is a neutral option (as the cost is same for both). It neither help nor hurts the adoption of the new drug.
2) Like others have pointed out, cost is not discussed in the question stem.

The stimulus of this question is interesting because it does not tell you why do people stop
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