The management of branches by futures companies includes three levels: first, the futures companies shall implement unified management of branches, and shall not jointly manage branches with others, and shall not contract, lease or entrust others to operate branches; Second, the business operated by branches shall not exceed the business scope of futures companies; Third, the futures company should implement unified settlement, unified risk management, unified fund allocation, unified financial management and accounting for the business department. So the answer to this question is C.