Medium-Easy Understand Recursion & Backtracking Multiple Choice

What is the time complexity of generating all combinations C(n,k)?

Understand — Tests comprehension and ability to explain concepts.

Answer Options

A O(n!)

B O(k * C(n,k))

C O(n^k)

D O(2^n)

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This question is from the Recursion & Backtracking topic (Algorithms).

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