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: Surgery
Suture with least adhesion to tissues and high plasticity is: 
Select and explain. 
A. Nylon, B. Prolene, C. Polyglycolate, D. PDS
B: Prolene
Answer: B: Prolene 
Explanation: Polypropylene (prolene) is an extremely inert suture with a (low) tissue reactivity and good tensile strength comparable to nylon. It has a very slippery surface with low adherence to tissues. Its extreme smoothness does compromise knot security and extra knots are required to prevent loosening of the suture.