Excercising muscle will receive more oxygen from hemoglobin than will relaxed muscle because:
a)it's PO2 is low
b)it's PCO2 is high
c)both a and b
d)both a and b and its temp is higher than usual
a)it's PO2 is low
b)it's PCO2 is high
c)both a and b
d)both a and b and its temp is higher than usual