What are the considerations in choosing a helmet for a motorcycle?

1. AThe helmet should have a ventilation system as well as as many fastening straps as possible.
2. BThe main thing is that the helmet fits the size and structure of the rider's head. The strength of the helmet is not important.
3. CA standard helmet will provide optimal protection (also for the chin) and will fit the size and structure of the rider's head.
4. DA standard helmet is not important, but it is important that it has an aerodynamic structure, to reduce fuel consumption.

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