Pericardial effusion cardiac tamponade and constrictive pericarditis soap part 2

Which physical examination findings constitute Beck's triad in the context of cardiac tamponade?

1: Hypertension, high JVP, loud heart sounds
2: Hypotension, muffled heart sounds, distended neck veins
3: Hypertension, pulsus paradoxus, low JVP
4: Hypotension, clear heart sounds, flat neck veins