Under Which of the Following Conditions Would You Postpone a Diffusing

Multiple Choice

Under which of the following conditions would you postpone a diffusing capacity test?
1) Just before the test, the patient smoked two cigarettes.
2) Just before the test, the patient had an episode of severe coughing.
3) Just before the test, the patient had a long wait at a busy bus stop.

A) 1 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3