Arrange the Pathophysiological Changes Involved in a Pulmonary Embolism (A-D)

Arrange the pathophysiological changes involved in a pulmonary embolism (A-D). (Enter the number of each step in the proper sequence; do not use commas or spaces.)
A) The thrombus becomes an embolus and travels into the inferior vena cava.
B) The thrombus travels into the right side of the heart.
C) Inflammation and thrombus form in the vein.
D) The thrombus then enters the pulmonary artery.