Which of the following statements are correct?
Which one or more?
a.
Sensorineural hearing impairment: sharp increase in thresholds for higher frequencies no air-bone gap; conductive hearing impairment: flat graph, with air-bone gap.
b.
Sensorineural hearing impairment: sharp increase in thresholds for higher frequencies; conductive hearing impairment: flat graph, no air-bone gap.
c.
Sensorineural hearing impairment: flat graph with no air-bone gap; conductive hearing impairment: sharp increase in thresholds for higher frequencies, air-bone gap.
d.
Sensorineural hearing impairment: sharp increase in thresholds for higher frequencies, no air-bone gap; conductive hearing impairment: sharp increase in thresholds for higher frequencies with air-bone gap.
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