With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The characteristic of the blue color is limited to light water, with heavy water having another color; this is because the molecular vibration harmonics, which in light water cause weak absorption in the red part of the visible spectrum, are shifted into the infrared and thus heavy water does not absorb red light.
text_B: What color can a person expect heavy water to be?
DON'T KNOW.