Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) Infrared absorption spectroscopy is a common method for identifying functional groups in the structure of organic molecules.
B) Infrared absorption spectroscopy is a technique that makes use of the fact that infrared photons can excite the valence electrons in organic molecules.
C) Infrared absorption spectroscopy is a simple yet powerful method for determining the absolute configuration of chiral organic molecules.
D) Infrared absorption spectroscopy observes the energy emitted by vibrating bonds in molecules.
E) Infrared absorption spectroscopy is a technique frequently used in separation of isomers.