Which of the Following Statements About Heparins Is TRUE

Which of the following statements about heparins is TRUE?

A) Low molecular weight heparins (LMWH) are readily filtered and excreted by the kidneys, and unfractionated heparins (UFH) are not
B) LMWHs may be given subcutaneously; UFH cannot be administered subcutaneously
C) UFHs require monitoring of partial thromboplastin times (PTTs) to make certain they are safely dosed; LMWHs do not
D) UFHs are dosed by body weight (in kilograms) ; LMWHs are not