Which statement is NOT TRUE about a Z tranche security?

1. A Z tranche does not get any payment until all other tranches are paid off

2. The interest on a Z tranche gets used for interest payments on more senior tranches

3. A Z tranche has a higher coupon rate than the more senior

4. A-tranche A Z tranche has a higher WAL than the more senior

5. A-tranche A Z tranche gets it's name from a Zero-coupon bond