This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
In actinomycosis of the spine, the abscess usually erodes- 
Select and explain. 
A. Intervertebral disc, B. Into the pleural cavity, C. Into the reteroperitoneal space, D. Towards the skin
D: Towards the skin
Answer: D: Towards the skin 
Explanation: Actinomycosis of the spine is characterized by granulomatous lesions or osteomyelitis. Cutaneous sinus tracts frequently develop.