Which topic set is included in the federal passenger endorsement knowledge areas in 49 CFR 383.117?

1. Loading, emergency exits, fires, unruly passengers, railroad crossings, drawbridges, and braking
2. Only fare collection, bus route design, and customer service scripts
3. Only coupling, uncoupling, fifth wheels, and kingpins
4. Only tank surge, outage, and baffled tank operation