What is correct about expiratory reserve volume?
a. It's volume is less than TV(tidal volume)
b. It's volume is almost equal to RV(reserve volume)
c. ERV=EC-TV (EC-expiratory capacity)(ERV-expiratory reserve volume)
d. Two of the above are correct
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HELLO MATE...
I THINK THE 4 OPTION IS CORRECT..
HOPE IT HELP
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