Why is entanglement special?

Question: Why is entanglement considered special in quantum computing? A) The full state of entangled qubits cannot always be described as independent individual states B) It makes quantum computers immune to noise C) It allows unknown quantum states to be copied perfectly D) It removes the need for quantum gates Correct: A Explanation: Entangled qubits share a joint quantum state. The state of the entire system can contain correlations that cannot be explained by treating each qubit independently. Topic: quantum computing / entanglement