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(Choose 1 answer)
What is the output of the following code snippet?Set<Integer> set1 = new HashSet();set1.add(1); set1.add(2); set1.add(3); set1.add(1);Set<Integer> set2 = new HashSet();set2.add(1);set2.add(4);set1.removeAll(set2);System.out.println(set1);
A. [2, 3]
B. [3,1]
C. [1,2]
D. [4,1]
DIFUOn the exem