题目3单选题
在C#程序中要显示一个消息为:This is a test,标题为;hello的消息框正确的语句应该是:( )A. MessageBox.show("This is a test:,"hello")B. MessageBox("This is a test:,"hello")C. MessageBox.show("hello","This is a test:)D. MessageBox("hello","This is a test:)