| [ A ] 20 hertz to 200 hertz |
|
| [ B ] 2 hertz to 20 hertz | |
| [ C ] 200 hertz to 2000 hertz | |
| [ D ] 20 hertz to 20000 hertz | ![]() |
| [ A ] 20 hertz to 200 hertz |
|
| [ B ] 2 hertz to 20 hertz | |
| [ C ] 200 hertz to 2000 hertz | |
| [ D ] 20 hertz to 20000 hertz | ![]() |
| Answer : Option D |
| Explanation : |
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