Some Prostaglandins Induce Inflammation

Some prostaglandins induce inflammation.Aspirin is an anti-inflammatory drug because:

A) Apparently it acetylates the enzyme cyclooxygenase.
B) It reacts with arachidonic acid preventing the synthesis of inflammatory prostaglandins.
C) It blocks the synthesis of the catalytic enzyme leading to inflammatory prostaglandins.
D) It reacts with inflammatory prostaglandins preventing them for being active.
E) It renders the arachidonic acid inactive in the synthesis of prostaglandins.