Read the following assertion and reason based statements and choose the correct answer:
1. Assertion: Reverberation is useful for making speech in an auditorium continue for a longer time after the speaker stops.
Reason: Multiple reflections of sound can cause sound to persist for some time after the original sound has stopped.
Reason: Multiple reflections of sound can cause sound to persist for some time after the original sound has stopped.
2. Assertion: Two animals can use echolocation even if they produce sounds of different frequencies.
Reason: Echolocation depends on detecting reflected sound from objects in the surroundings.
Reason: Echolocation depends on detecting reflected sound from objects in the surroundings.