Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of electromagnetic waves would be best for airport security to use?
A.
X-rays would be best because they are low-energy waves that can penetrate gases.
B.
X-rays would be best because they are high-energy waves that can penetrate solids.
C.
Radar waves would be best because they are low-energy waves that can penetrate gases.
D.
Radar waves would be best because they are high-energy waves that can penetrate solids.