C
E
C
D
A
72 dB
C
C
A
73 dB
C
C
D
C
70 dB
C
B
72 dB
B
C
D
B
70 dB
C
B
70 dB
D
C
70 dB
D
B
71 dB
C
C
68 dB
C
C
C
C
B
D
B
70 dB
C
B
70 dB
C
C
71 dB
C
D
C
B
72 dB