A pregnant female is being treated with penicillin for syphilis. Twelve hours after the first injection of penicillin, the client develops fever, musculoskeletal pain, and tachycardia. The nurse recognizes these manifestations as being suggestive of Select one: a. complications of the syphilis infection. b. resulting from the client’s anxiety regarding the diagnosis of syphilis during pregnancy. c. resulting from the release of toxins from the spirochetes into the bloodstream. d. anaphylaxis to penicillin.