Assertion: Gamma rays are electromagnetic waves having the smallest wavelength. Reason: Gamma rays are the least energetic electromagnetic waves.
Which of the following options is correct?
1) Both assertion (a) and reason (r) are true, and reason (r) is the correct explanation of assertion (a).
2) Both assertion (a) and reason (r) are true, but reason (r) is not the correct explanation of assertion (a).
3) Assertion (a) is true, but reason (r) is false.
4) Assertion (a) is false, but reason (r) is true.