Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to pick the correct uber type [title] Choose uberx for the fastest service. [step] Uberx is the standard service offered by uber. Given its high level of demand, this is the most common service and therefore often the quickest service to arrive at your pickup location.

Ending1: [substeps] Go to the service's website. Read over the service's customer service policy. Ending2: Your pickup location will be indicated by a red or yellow triangle. [substeps] Packages are available for specialty issue uber. Ending3: [substeps] There are three primary service types when it comes to using uber for the fastest service. [title] Call about your route when the radio radio is on. Ending4: Its base fare is $2.20, and operates at 1.30 per minute. All uberx cars : [substeps] Can carry up to 4 passengers.

Answer format: ending1/ending2/ending3/ending4