This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
Which of the following is NOT an advantage of low molecular weight herparin over unfractionated heparin? 
Select and explain. 
A. Higher efficiency in aerial thrombosis, B. Less frequent dosing, C. Higher and more consistent subcutaneous bioavailability, D. Laboratory monitoring of response not required
A: Higher efficiency in aerial thrombosis
Answer: A: Higher efficiency in aerial thrombosis 
Explanation: Ref: KDT 6/e p603