C
D
C
72 dB
C
B
C
C
C
E
C
D
C
72 dB
C
C
B
C
C
A
72 dB
C
C
C
B
C
C
B
B
C
C
C
C
C
C
B
C
C
D
C
70 dB
C
C
C
C
C
B
