What is QAOA commonly used for?

Question: What is QAOA commonly used for? A) Rendering quantum circuit images only B) Approximate optimization problems using a parameterized quantum circuit C) Copying arbitrary unknown quantum states D) Replacing all classical computers Correct: B Explanation: The Quantum Approximate Optimization Algorithm uses a parameterized circuit with alternating operators to search for good solutions to optimization problems. Topic: quantum computing / QAOA / optimization