The Other Bell Pair

Which circuit prepares $\tfrac{1}{\sqrt{2}}(|01\rangle + |10\rangle)$ starting from $|00\rangle$ ? Qiskit ordering: $q_0$ is the right-hand ket symbol, and CX(q0, q1) maps $|a, b\rangle \to |a, a \oplus b\rangle$ with $q_0$ as control.

$H$ on both qubits, then CX(q0, q1)

$H$ on $q_0$ , then CX(q0, q1), then $X$ on $q_1$

$H$ on $q_0$ , then CX(q0, q1), then $Z$ on $q_1$

$X$ on both qubits, then $H$ on $q_0$ , then CX(q0, q1)