59. HIV is the virus that causes AIDS. In the mid-1990s, researchers discovered an enzyme in HIV called protease. Once theenzyme's structure was known, researchers began looking for drugs that would fit into the active site and block it. If thisstrategy for stopping HIV infections were successful, it would be an example of what phenomenon?
(A) allosteric regulation
(B) competitive inhibition
(C) vaccination
(D) denaturation
(E) synergistic effect