[单选题]阅读下段代码，class Dog{public String name;Dog(String name){ this.name =name;}}public class Demo1{public static void main(String[] args){ Dog dog1 = new Dog("xiaohuang"); Dog dog2 = new Dog("xiaohuang"); String s1 = dog1.toString(); String s2 = dog2.toString(); String s3 = "xiaohuang"; String s4 = "xiaohuang";}}返回值为true的是（ ）
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2023-11-01 15:18:41
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[单选题]阅读下段代码，class Dog{public String name;Dog(String name){ this.name =name;}}public class Demo1{public static void main(String[] args){ Dog dog1 = new Dog("xiaohuang"); Dog dog2 = new Dog("xiaohuang"); String s1 = dog1.toString(); String s2 = dog2.toString(); String s3 = "xiaohuang"; String s4 = "xiaohuang";}}返回值为true的是（ ）

A.dog1.equals(dog2)
B.s1.equals(s2)
C.s3.equals(s4)
D.dog1==dog2
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