创建一个向文件“file.txt”追加内容的输出流对象的语句有()。
A. FileOutputStream out=new FileOutputStream(“file.txt”,true);
B. OutputStream out=new FileOutputStream(“file.txt”,“append”);
C. OutputStream out=new FileOutputStream(“file.txt”);
D. FileOutputStream out=new FileOutputStream(new file(“file.txt”));
E. OutputStream out=new FileOutputStream(new File(“file.txt”),true.;