Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to ride caltrain [title] Review the map and schedule to find trains that are going where you want to go and when you want to go. [step] Caltrain fares are calculated by zone. For example, if you plan to travel from san jose to san mateo, you will need a three-zone ticket.

Ending1: If you plan to turn north, you will only use the one zone aggregator. [substeps] Different cities and states have different fare zones that vary by city. Ending2: Know which zone you are going to and from. [title] Determine how many zones you will travel through. Ending3: If you plan to travel to san diego and san cruz, you will want an three-zone ticket. If you plan to travel north, you will want a four-zone ticket. Ending4: Even if you can board a train connecting here, you may be temporarily denied a permit. [title] Evaluate your trip by looking online to find fares.

Answer format: ending1/ending2/ending3/ending4