Question 12 Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It varies according to age and body size. The data below gives the VC (in cm3) for 8 adult men of age 40 in a city: 3400, 3760, 5000, 4200, 5600, 3840, 4780, 5100. What is the interquartile range? (A). 1295; (B). 1205; (C). 1250; (D). 771.7; (E). 475