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