A. 20000 to 30000 hertz
B. 10 to 20 hertz
C. 2000 to 4000 hertz
D. 6000 to 8000 hertz
Correct Answer: 2000 to 4000 hertz ✔
Last Updated: February 11, 2021
A. 20000 to 30000 hertz
B. 10 to 20 hertz
C. 2000 to 4000 hertz
D. 6000 to 8000 hertz
Correct Answer: 2000 to 4000 hertz ✔
Last Updated: February 11, 2021