Multiple choice
Execute the circuit and measure. How likely is the outcome |000⟩?
const c = circuit(3); // Prepare the data qubit in |+> = (|0> + |1>)/sqrt(2). c.h(0); // Spread it across the code block with two CNOTs. c.cx(0, 1); c.cx(0, 2); return c;
Commit your prediction for P(|000⟩) — then run it.