A) A laser beam of red light
B) Magnetic dots
C) Magnetic strips
D) All of the above
E) None of these
Correct Answer: A
Solution :
Optical disk drive uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. CD, DVDs, Blu-ray discs are common examples of optical media which can be read and recorded by such drives.
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