During pulmonary function testing, a forced vital capacity of 2.4 L and a slow vital capacity of 2.18 L were obtained. Which statement is true?

• A. The data meets ATS-ERS standards and should be reported.
• B. The SVC shows poor effort and should be repeated.
• C. The FVC shows poor effort and should be repeated.
• D. The patient has obstructive lung disease.

Answer: (B)