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After taking a long flight, 65 year old previously healthy lady became breathless and collapsed. The ECG proved of tachycardia and SI QIII TIII pattern. Which is the best answer for her pathobiology?

A. Respiratory acidosis
B. Respiratory alkalosis
C. D-dimer which is derived from prothrombin may be helpful for diagnosis
D. Oxidation of Vit K should be prevented by warfirin
E. Type 2 respiratory failure