Given: Which code fragment, inserted at line 24, outputs "123abc 123abc"?()
- Asb1.append("abc"); s1.append("abc");
- Bsb1.append("abc"); s1.concat("abc");
- Csb1.concat("abc"); s1.append("abc");
- Dsb1.concat("abc"); s1.concat("abc");
- Esb1.append("abc"); s1 = s1.concat("abc");
- Fsb1.concat("abc"); s1 = s1.concat("abc");
- Gsb1.append("abc"); s1 = s1 + s1.concat("abc");
- Hsb1.concat("abc"); s1 = s1 + s1.concat("abc")