下面哪些代码段是正确的Java源程序?( ) A. import java.io.*; package testpackage; public class Test{/* do something... */} */} B. import java.io.*; class Person{/* do something... */} public class Test{/* do something...} C. import java.io.*; import java.awt.*; public class Test{/* do something... */} D. package testpackage; public class Test{/* do something... */}