C
B
B
B
B
A
C
B
72 dB
B
C
C
B
75 dB
B
C
75 dB
C
C
74 dB
B
D
73 dB
C
B
7 dB
C
A
70 dB
C
B
73 dB
C
B
70 dB
D
E
72 dB
C
A
70 dB
B
E
71 dB
C
A
C
B
C
D
74 dB
C
B
73 dB
C
B
73 dB
C
B
73 dB
C
B
71 dB