Given:Which code fragment, inserted at line 24, outputs 123abc 123abc?() A.sb1.append(abc); s1.append(abc);B.sb1.append(abc); s1.concat(abc);C.sb1.concat(abc); s1.append(abc);D.sb1.concat(abc); s1.concat(abc);E.sb1.append(abc); s1 = s1.concat(abc);F.sb1.concat(abc); s1 = s1.concat(abc);G.sb1.append(abc); s1 = s1 + s1.concat(abc);H.sb1.concat(abc); s1 = s1 + s1.concat(abc);
Given:Which code fragment, inserted at line 24, outputs "123abc 123abc"?()
A.sb1.append("abc"); s1.append("abc");
B.sb1.append("abc"); s1.concat("abc");
C.sb1.concat("abc"); s1.append("abc");
D.sb1.concat("abc"); s1.concat("abc");
E.sb1.append("abc"); s1 = s1.concat("abc");
F.sb1.concat("abc"); s1 = s1.concat("abc");
G.sb1.append("abc"); s1 = s1 + s1.concat("abc");
H.sb1.concat("abc"); s1 = s1 + s1.concat("abc");
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