If the source is Economist GMAt, then OA is B.
fails to distinguish between a product and a brand
OE:
The premise discusses a trend that characterizes a product, namely, cars. The conclusion, on the other hand, is drawn about a specific brand (i.e., AutoCar). The author's flaw is that he fails to distinguish between these two things resulting in an inaccurate statement about AutoCar's sales. It is possible, for example, that car sales of other manufacturers have risen by more than 30%, but
...
fails to distinguish between a product and a brand
OE:
The premise discusses a trend that characterizes a product, namely, cars. The conclusion, on the other hand, is drawn about a specific brand (i.e., AutoCar). The author's flaw is that he fails to distinguish between these two things resulting in an inaccurate statement about AutoCar's sales. It is possible, for example, that car sales of other manufacturers have risen by more than 30%, but
...
