Consider the following statements:
1. Fiber optics is based on the principle of total internal reflection.
2. In an optical fiber communication system, power consumption is extremely low.
3. In India, Reliance Group of Industries is engaged in the manufacture of optical fiber.
4. Optical fiber communications are free from radio frequency interference.
Which of the following statements is/are correct?
1. 1, 2 and 3
2. 1, 2 and 4
3. Only 1 and 3
4. 4 only
5. None of the above/More than one of the above