The diagram represents waves A, B, C, and traveling in the same medium. Which two waves shown here have the same wavelength?
O A and B
O A and C
O B and C
O C and D

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hello, ballerbaby1265. i would say that the child has had a concussion due to the fall and their symptoms. 60 beats per minute is normal in a child that is sleeping, but not while awake. two of the main symptoms of a concussion after are both sleepiness and being tired. i hope i have a great night.