By branches in Bangkok, because most income Bangkok, the country's economic centre and has high living costs, the average total income of business of each branch.
The fields that make the most money is Bangkok. Because Bangkok is the economic center of the country and the high cost of living makes business with the highest average income of each branch.
The branch that make most is Bangkok. Bangkok center because of the economy of a country and a high income business worth living, including the maximum of each branch.