Disease — practice question

Some indicators of syphilis are shown here. 1 fever 2 loss of appetite 3 skin ulcers that fail to heal 4 skin rash 5 tiny, painless sores 6 swelling of lymph nodes What are the initial signs of syphilis?

• A1 and 2
• B3 and 4
• C4 and 5
• D5 and 6