阅读下列代码
Public class Example {
public static void main(String[] args) throws Exception {
OutputStream out = new FileOutputStream("itcast.txt ", true);
String str = "欢迎你!";
byte[] b = str.getBytes();
for (int i = 0; i <b.length; i++) {
out._____;
}
out.close();
}
}
请说出下划线上，填写的内容( )
1分
A.read(b)
B.write(b)
C.close()
D.available()
正确答案是B