What is one reason a doubles or triples combination might take longer to build full air pressure at startup than a single trailer combination?

Pick an answer

1. There is more total air volume across the tractor, dolly, and multiple trailers that the compressor needs to fill
2. Additional trailers always reduce the total air volume that needs to be filled by the compressor the farther back in the combination they sit
3. Only the tractor's tank needs to be filled regardless of trailer count
4. Build-up time is unaffected by the number of trailers attached

Correct!

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