C
C
74 dB
B
A
75 dB
D
B
75 dB
D
B
75 dB
B
A
B
75 dB
B
A
75 dB
B
A
75 dB
B
A
75 dB
A
B
75 dB
B
A
D
B
75 dB
D
A
75 dB
A
B
75 dB
C
B
75 dB
D
A
75 dB