The answer is C. It must reflect them
Any light that is absorbed by an object will not be visible, only light that is reflected by the object is visible.
Explanation:
Light consists of colors Violet, Indigo, Blue, Green, Yellow, Orange and Red. If we are seeing a color, it is decided by which color are absorbed and reflected by the object. The color of the object is reflected by the object other colors are absorbed by the object.
Here object appears in red color so red color is reflected by the object and other colors are absorbed.
Option C is the correct answer.