Which of the Following Is True About Light and Vision

Which of the following is true about light and vision?

A) When we see the color of an object, all light is being absorbed by that object except for the color being experienced.
B) Human photoreceptors respond to light in the 100- 300 nm range.
C) Light is a form of electromagnetic radiation that slows down as it enters a medium of relatively less density.
D) The greater the incident angle of light striking a refractive surface, the less the amount of light bending.