A blow to the head can result in a serious, but not obvious, injury, thus the correct option is A.
Anyone who has had a blow to the head should seek immediate medical treatment .
The force of the blow can cause the brain to twist , can damage nerves and tissue. The skull's sharp interior ridges can tear arteries and veins running through the brain, allowing blood to leak.
So, it is necessary to seek doctor immediately after getting a blow in head can result in a serious, but not obvious, injury.
To know more about injuries,
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