E
C
C
C
C
72 dB
C
C
C
C
C
C
72 dB
C
C
72 dB
C
C
C
C
E
C
B
C
C
C
C
C
E
B
C
C
C
C
C
C
C
C
C
72 dB
C
C
72 dB
C
C
C
C