The sound pressure (expressed in $\mu \mathrm{Pa}$ ) of the faintest sound that a normal healthy individual can hear is

(A) 0.2

(B) 2

(C) 20

(D) 55

The sound pressure (expressed in $\mu \mathrm{Pa}$ ) of the faintest sound that a normal healthy individual can hear is

(A) 0.2

(B) 2

(C) 20

(D) 55

127