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: Medicine
Which one of the following platelet counts is usually associated with increased incidence of spontaneous bleeding - 
Select and explain. 
A. Greater tha 80,000/mm3, B. 40,000/mm3, C. 20,000mm3, D. Less than 20,000mm3
D: Less than 20,000mm3
Answer: D: Less than 20,000mm3 
Explanation: None