We are at your service. Don’t（）to turn to us if you have any problems

A．服务费用是多少钱 How about the service charge

B．短信回执每笔一元。 One yuan for SMS service

C．请写下您的手机号码。 Please write your phone number

D．您需要回执服务吗Do you need A.R Servi

A Windows Communication Foundation (WCF) service is deployed with netTcpBinding.This service uses a duplex message exchange pattern.You are developing the next version of the WCF service.You discover that your company‘s hardware load balancer performs correctly only for WCF services that use HTTP.You need to ensure that your service works with the load balancer.What should you do？（）

A. Use basicHttpBinding.

B. Create a custom binding that has the compositeDuplex, textMessageEncoding, and namedPipeTransport binding elements in this order.

C. Create a custom binding that has the compositeDuplex, textMessageEncoding, and wsHttpTransport binding elements in this order.

D. Use wsHttpBinding.

A.you;we

B.your;we

C.you;us

D.your;us