Answer:
Fluorescent lamp and a CCD array as a light source and detector. Manufacturers of flatbed scanners recently replaced the fluorescent lamp by light emission diodes (LED) as a light source.
Explanation:
This is what a website said so I hope it helps but if it doesn’t then I’m sorry :/ and I would get someone else’s opinion!!!
Hi! The correct answer is the third one. I'm not 100% sure, but I hope this helps!