Use of asymmetric encryption in an Internet e-commerce site, where there is one private key for the hosting server and the public key is widely distributed to the customers, is MOST likely to provide comfort to the: 
A、customer over the authenticity of the hosting organization. 
B、hosting organization over the authenticity of the customer. 
C、customer over the confidentiality of messages from the hosting organization. 
D、hosting organization over the confidentiality of messages passed to the customer.