This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
Keratoderma blenorrhagica is seen in: 
Select and explain. 
A. Ankylosing spondylitis, B. Gouty arthritis, C. Reactive arthritis, D. Psoriatic arthritis
C: Reactive arthritis
Answer: C: Reactive arthritis 
Explanation: (Reactive arthritis): Ref: 1997 - H, 754-CMDT-09 (2114-H17th)Reactive arthritis: (Reiter's syndrome)Clinical triad: - Urethritis, conjunctivitis (less commonly uveitis), mucocutaneous lesions and aseptic arthrit is.* The characteristic skin lesions keratoderma blenorrhagica consist of vesicles that become hyperkeratotic, ultimately forming a crust before disappearing. They are most common on the palm and soles* Lesions on the glans penis, termed circinate balanitis are common