A.select sum（profit）from profits where region in （select region froms regions where reg_head in （‘SMITHERS’，‘FUJMORI’，‘LAKKARAJU’））and product =’TOYS’；
B.select sum（profit）from profits where region like （select region froms regions where reg_head in （‘SMITHERS’，‘FUJMORI’，‘LAKKARAJU’）and product =’TOYS’）；
C.select sum（profit）from profits where region =（select region froms regions where reg_head in （‘SMITHERS’，‘FUJMORI’，‘LAKKARAJU’））and product =’TOYS’；
D.select sum（profit）from profits where region is （select region froms regions where reg_head in （‘SMITHERS’，‘FUJMORI’，‘LAKKARAJU’））and product =’TOYS’；