With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?1.VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.2.VLC is known as long-range optical wireless communication.3.VLC can transmit large amounts of data faster than Bluetooth.4.VLC has no electromagnetic interference.Select the correct answer using the code given below:

1. A

   1, 2 and 3 only

   1, 2 and 3 only. VLC is typically short-range, not ‘long-range optical wireless’ as often worded.

2. B

   1, 2 and 4 only

   1, 2 and 4 only. Keeps the long-range miss.

3. C

   1, 3 and 4 only

   1, 3 and 4 only. Visible-spectrum EM, multi-Gbps lab rates, no radio EMI. Not a long-range system as statement 2 claims.

4. D

   2, 3 and 4 only

   2, 3 and 4 only. Drops the spectrum limb.

Summary. Official key is (c) 1, 3 and 4 only. VLC/Li-Fi uses visible light (roughly 375–780 nm), can exceed 10 Gbps in tests, and does not add radio interference. It is a short-range, line-of-sight tool, not long-range optical wireless.