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What is the auxiliary space requirement of the exponential sort when used with recursive binary search?

(a) O(n)

(b) O(2^n)

(c) O(1)

(d) O(log n)

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The correct answer is (d) O(log n)

The best explanation: Exponential search requires an auxiliary space of log n when used with recursive binary search. This space is required for the recursion call stack space.

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