Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?
(a) Urea -5-10 mg/100 ml of blood
(b) Blood sugar (fasting) - 80-100 mg/100 ml
(c) Total blood volume - 3 - 4 litres
(d) ESR in Wintrobe method -9-15 mm in males and 20-34 mm in females