<prompt> Treatment of choice for late cardiovascular syphilis is?Benzathine penicillin 7.2 million units in three divided dosesBenzathine penicillin 2.4 million units single doseBenzylpenicillin 12-24 million units for 21 daysTetracycline 2g daily  <response>: Treatment of choice for late cardiovascular syphilis : Benzathine penicillin 7.2 million units in three divided doses, once a week. Benzathine penicillin G, 2.4 million units intramuscularly once a week for 1-3 weeks, is effective in the treatment of syphilis. 