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: Surgery
Ludwig's Angina spreads by 
Select and explain. 
A. Lymphatics, B. Vascular route, C. Contiguity via fascial planes, D. Both Lymphatics and blood vessels
C: Contiguity via fascial planes
Answer: C: Contiguity via fascial planes 
Explanation: Spread of Ludwig's Angina is via fascial planes in continuity and not by Lymphatics.