Bad Qubits — Learn Quantum by Doing

Multiple choice

Using RZ(pi/2) = S and RZ(pi/4) = T (up to global phase), and the fact that same-axis z-rotations add their angles, which Clifford+T word realizes RZ(3*pi/4)?

H then T (H T)
S then T (S T)
S then S (S S)
T then T (T T)