What Is the Primary Difference Between Unfractionated Heparin and Low-Molecular-Weight

Multiple Choice

What is the primary difference between unfractionated heparin and low-molecular-weight heparin (LMWH) ?

A) Unfractionated heparin binds only to thrombin (factor II) .
B) Unfractionated heparin binds only to factor X (Xa) .
C) LMWH binds only to thrombin (factor II) .
D) LMWH binds only to factor X (Xa) .