B
69 dB
D
C
71 dB
D
B
69 dB
C
B
67 dB
C
B
69 dB
C
A
71 dB
C
A
71 dB
B
C
A
C
B
C
B
70 dB
C
C
67 dB
C
B
69 dB
C
B