According to Zheng Bingwen, which of the phenomena does NOT reflect local government protectionism
A.Cities don’t want newcomers.
B.During a move, payments made by their former employer into the fund are surrendered to the local government.
C.In China, around 2,200 units at county and city level collect and manage the social security funds of local citizens.
D.Payments paid by wage-earners may only be transferred to the city on their residence permit.