rak08
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Please let me know if this thought process is wrong
Superstores has been talked about only for office supplies and then conclusion says "in the entire retail market their share is low so the analysis is wrong"
now if the share of office supplies in the retail market becomes low then it makes sense why the superstores have lower total share. hence we pick B because the entire market's pricing became lower thereby contributing lower to the entire retail market share.
Yup! If we're trying to weaken the claim that superstores did
not play an important role in the upheaval in the office-equipment industry, then we're looking for an answer choice showing that the superstores
did play an important role in this upheaval, despite being a small percentage of the total market.
That's exactly what (B) does. The superstores lower their prices. This move prompts other stores to match those prices, and then this price competition causes smaller stores to go out of business. And then we've got our upheaval.
Nice work!