(A) String of 0’s whose length is a perfect squere
(B) Set of all palindromes made up of 0’s and 1’s
(C) String of 0’s whose length is a prime number
(D) All of the given options
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(A) String of 0’s whose length is a perfect squere
(B) Set of all palindromes made up of 0’s and 1’s
(C) String of 0’s whose length is a prime number
(D) All of the given options