Which of the following is true of the symptoms of syphilis? a. tertiary syphilis presents itself ten to ninety days after infection. b. primary syphilis presents itself with fever, rash, and swollen lymph nodes. c. the most obvious symptom of syphilis is the chancre, an ulcerated sore at the site of initial infection. d. secondary syphilis presents itself with heart and nervous system damage, including blindness and loss of mental abilities.