C
A
72 dB
C
A
69 dB
B
B
70 dB
C
A
C
A
69 dB
C
A
69 dB
B
D
B
72 dB
C
A
C
A
69 dB
B
C
A
D
B
72 dB
D
B
72 dB
D
B
72 dB
D
B
72 dB
B
B
B