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0. Assume that we modify the costs incurred for operations in calculating Levenshtein distance, such that both the insertion and deletion operations incur a cost of 1 each, while substitution incurs a cost of 2. Now, for the string 'lash' which of the following set of strings will have an edit distance of 1?
ash, slash, clash, flush
flash, stash, lush, blush
slash, last, bash, ash
None of the above
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