$4.$ Subway, with more than $3,000$ outlets in Canada, is planning for a new restaurant in Brampton, Ontario. Three locations are being considered. The following table gives the factors for each site.

Factors Weight Location A Location B Location C

Space $0\mathrm{.}30607080$

Costs $0\mathrm{.}25408030$

Traffic Density $0\mathrm{.}20508060$

Neighbourhood Income $0\mathrm{.}15507040$

Zoning laws $0\mathrm{.}10802090$

a$)$ At which site should Subway open the new restaurant? $(2$ marks$)$