Operations commonly used with a Hadamard gate

Question: Which operation is commonly used with a Hadamard gate to create a Bell state? A) H on the first qubit followed by CNOT B) X on both qubits followed by measurement C) Z on the second qubit followed by reset D) Measurement followed by another measurement Correct: A Explanation: A Bell state can be created by placing one qubit into superposition using a Hadamard gate and then applying a CNOT gate to correlate it with another qubit. The resulting two-qubit state is entangled, meaning the qubits cannot be described independently. Topic: quantum computing / entanglement / Bell states