C
C
75 dB
C
B
C
C
C
C
C
C
C
A
72 dB
C
C
C
C
D
C
73 dB
D
B
70 dB
C
C
C
B
D
C
72 dB
C
C
72 dB
C
B
72 dB
C
A
D
C
73 dB
C
C
C
