What does measurement return?

Question: When a qubit is measured in the computational basis, what does it return? A) A classical result, usually 0 or 1 B) Both 0 and 1 at the same time C) A copy of the original quantum state D) A new entangled qubit automatically Correct: A Explanation: Measurement converts quantum information into a classical outcome. For a single qubit measured in the computational basis, the result is either 0 or 1. Topic: quantum computing / measurement