Select the correct option to test your answer: A A device which when attached to an aircraft makes it invisible on the radar B A coating which reduces the visibility of an aircraft on radar C A Technology by which it is possible for the aircraft's to spy in the enemy air-space D A technology by using which paratroopers can be dropped stealthily behind the enemy columns. Correct Answer: Option B (A coating which reduces the visibility of an aircraft on radar) Verified correct option for Everyday Science (Everyday Science).