根据下面的程序代码,哪些选项的值返回true?public class Square { long width; public Square(long l) { width = l; } public static void main(String arg[]) { Square a, b, c; a = new Square(42L); b = new Square(42L); c = b; long s = 42L; } }
A.a == b
B.s == a
C.b == c
D.a.equals(s)