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Consider the wave shown in the image below.

Which of the following choices gives the correct wavelength and amplitude of the wave?

A

$\lambda$ $=$ $3.5$; $A$ $=$ $1.25$

B

$\lambda$ $=$ $1.25$; $A$ $=$ $3.5$

C

$\lambda$ $=$ $5$; $A$ $=$ $7$

D

$\lambda$ $=$ $7$; $A$ $=$ $5$

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