In which of the following cases will the edit distance between two str

1.	In which of the following cases will the edit distance between two strings be zero?
A.	When one string is a substring of another
B.	When the lengths of the two strings are equal
C.	When the two strings are equal
D.	The edit distance can never be zero
Answer» D. The edit distance can never be zero

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In which of the following cases will the edit distance between two strings be zero?

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