McKinsey team has discerned different shopping habits of the 12-20 year old segment compared to other age groups, and thus, recommended Bros to alter its distribution network so as to better attack the concerned segment. The team also notes that financial resources and cost-effectiveness are important in considering distribution and sales force options. A number of possibilities have been scanned through and are presented in Table 1
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If sales increases in other age groups are not taken into account, using which network would help raise the profit margin the most?