单选题：The result of code below is:

The result of code below is: @[C](2)
```Java
public class Test {
public static void main(String args[]){
String str="ABCDE";
str.substring(3);
str.concat("XYZ");
System.out.print(str);
}}
```
A. DE
B. DEXYZ
C. ABCDE
D. CDEXYZ




A.DE
B.DEXYZ
C.ABCDE
D.CDEXYZ


答案：C