38.X-ray imaging relies on the fact that different biological tissues have distinct attenuation coefficients (µ). An X-ray beam with an initial intensity I0 passes through a bone of thickness x and attenuation coefficient u, emerging with intensity 1= Ioe -μX. If the same X-ray beam instead passes through another tissue of the same thickness but with half the attenuation coefficient (μ'= µ/2), what is the resulting intensity I?
(A) I' = 1/2
(B) I'=I
(C) I' = I2/I0
(D)
(E)

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統計： A(0), B(1), C(1), D(1), E(0) #3847814