Which of the following statements about the use of steroids in HIV positive patients suspected of having PCP pneumonia is true:
(A) The risk of developing overt multi-drug resistant tuberculosis is between 20 and 30%.
(B) No decrease in 30-day mortality has been shown.
(C) No decrease in the rate of deterioration to the point of respiratory failure requiring mechanical ventilation has been shown.
(D) Indications include an A-a gradient of > 35 mmHg or a pO2 < 70 mmHg.