Which of the Following Concepts Apply to FVC

Multiple Choice

Which of the following concepts apply to FVC?
I.It is the most frequently performed pulmonary function test.
II.It provides much information about large and small airway function.
III.It is an effort-dependent test.
IV.A test is assumed valid if the person can repeat three FVC maneuvers with a variation no greater than 10%.

A) III, IV
B) I, II, III
C) I, II, IV
D) I, II, III, IV