What is statevector simulation?

Question: What does statevector simulation track? A) Only the final classical bitstring B) The full complex amplitude vector of the quantum state C) Only the number of shots D) The physical temperature of the backend Correct: B Explanation: Statevector simulation tracks the full quantum state as a vector of complex amplitudes. It is exact for ideal circuits but becomes expensive for many qubits. Topic: quantum computing / statevector simulation