This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Lymphatic System), Subject name: Surgery
Most common type of primary lymphedema is? 
Select and explain. 
A. Lymphedema congenital, B. Lymphedema precox, C. Lymphedema tarda, D. None
B: Lymphedema precox
Answer: B: Lymphedema precox 
Explanation: ANSWER: (B) Lymphedema precoxREF: Sabiston 18'h edition chapter 69, style="color: rgba(0, 0, 0, 1); font-family: Times New Roman, Times, serif"> primary_lymphedema.htm' The most common form of primary lymphedema is praecox, which accounts for about 80% of the patients. Congenital and tarda lymphedemas each account for the remaining 10%"