Fire at US ammo dump, series of blasts

The transcript discusses an infarction event that occurred last March, followed by a brief question.

What is the significance of the infarction mentioned in March?

• It marks the beginning of a new treatment.

• It is a key event in the patient's medical history.

• It is unrelated to the patient's condition.

• It signifies a change in weather patterns.

What might the question 'What?' indicate in the context of the video?

• A change in topic.

• A conclusion of the discussion.

• A request for more information.

• An expression of surprise.