The following images show the same galaxy, the Sombrero galaxy, in visible light (on the left) and in X-ray frequencies (on the right).

Based on the above pictures, which of the following statements must be true?
A.
Bright X-ray sources do not radiate in the visible range.
B.
Dust that blocks X-ray radiation is transparent to light.
C.
Dust that blocks visible light is transparent to X-rays.
D.
Bright X-ray sources are also bright visible light sources.