The correct answer is A .
Share of Wallet measures the portion of a shopper group's total category spending that is captured by the retailer. CMKG describes share of wallet as the percentage of total category dollars spent on the brand or retailer being analyzed.
For Category X , the relevant figures are:
Midtown Mart Shoppers: Dollars - Market = $20,000
Midtown Mart Shoppers: Dollars - Midtown Mart = $15,000
So the calculation is:
$15,000 ÷ $20,000 = 75%
That means Midtown Mart captures 75% of the Category X spending made by Midtown Mart shoppers. The denominator is not all shoppers in the market. The denominator must be the total Category X market spend of Midtown Mart shoppers. That is why option B, C, and D are incorrect. Option C, 25% , incorrectly uses Category X as a share of all grocery market dollars. Option D, 60% , uses $15,000 ÷ $25,000, which compares Midtown Mart's Category X dollars to all shoppers' market dollars and is not the correct SOW denominator.