The components of the e-commerce system includes ________.
A.the network platform, buyers and sellers, certification center, payment center, logistics center, customer service center, and e-commerce service providers B.the network platform, buyers and sellers, certification center, payment center, logistics center, and e-commerce service providers C.the network platform, certification center, payment center, logistics center, and e-commerce service providers D.the network platform, buyers and sellers, certification center, payment center, and logistics center