Prostaglandin analogs have therapeutic utility in the following EXCEPT :: (A) Palliative treatment of patent ductus arteriosus, (B) Pulmonary hypertension, (C) Impotence, (D) Inflammatory bowel disease
Answer is A. Prostaglandin analogs are useful for

Pulmonary hypertension
Impotence
Peptic ulcer
Bronchial asthma
Inflammatory bowel disease

Remember, For PDA, indomethacin (drug decreasing PGs) is used.