Which of the following is the proper Chain Ratio Analysis and why?

A.)

Total amount of money spent on Frozen dog food in the Boston market	$1,920,000 million
Target Market	Percent of Target Market that spends money on dog food	Sales Potential	Formula
Parents with school-age children	79%	$1,516,800	$1,920,000 million x .79
Parents with younger/older children	71%	$1,363,200	$1,920,000 x .71
Roommate households	72%	$1,382,400	$1,920,000 x .72
Young childless couples	73%	$1,401,600	$1,920,000 million x .73
Household income > $50K	63%	$1,209,600	$1,920,000 million x .63
Total Market Sales Potential in Boston		$ 6,873,600	Add all sales potential

B.)

Total amount of money spent on Frozen dog food in the Boston market	$1,920,000 million
Target Market	Percent of Target Market that spends money on dog food	Sales Potential	Formula
Parents with school-age children	79%	$1,516,800	$1,920,000 million x .79
Parents with younger/older children	71%	$1.076,928	$1,516,800 x .71
Roommate households	72%	$775,388	$1,076,928 x .72
Young childless couples	73%	$566,033	$775,388 x .73
Household income > $50K	63%	$356,601	$566,033 x .63
Total Market Sales Potential in Boston		$ 3,781,320	Add all sales potential