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: Pathology
A 40 year old female patient complains of breathlessness. Patient is pregnant (3rd trimester) and is on bed rest. This patient is under- 
Select and explain. 
A. High risk for thrombosis, B. Low risk for thrombosis, C. Risk for primary thrombosis, D. No risk for thrombosis
A: High risk for thrombosis
Answer: A: High risk for thrombosis 
Explanation: None