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AP Computer Science A/Unit 2: Using Objects
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String Concatenation With The Plus Operator
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In the code segment below, which statement correctly concatenates the String variables s1 and s2 with a space between them? The statement must use the + operator for concatenation and assign the result to a new String variable named result.

public class StringConcat {
    public static void main(String[] args) {
        String s1 = "AP";
        String s2 = "Computer";
        // Missing statement
        System.out.println(result);
    }
}
A

String result = s1.concat(" ").concat(s2);

B

String result = s1 + s2;

C

String result = s1.concat(s2);

D

String result = s1 + " " + s2;

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