Arrange the following electromagnetic radiations in decreasing order of their frequencies.
1. Gamma rays
2. Ultraviolet rays
3. Radio waves
4. X-rays
Select the correct answer from the code given below :

1. A.4, 1, 3, 2
2. B.4, 1, 2, 3
3. C.1, 4, 2, 3
4. D.1, 4, 3, 2