What is a PTLA (Percutaneous Transluminal Angioplasty) used for and how is it done?
A) Treatment for varicose veins; injecting sclerosing agent
B) Treatment for peripheral artery disease; inflating a balloon in the narrowed artery
C) Treatment for aneurysms; inserting a stent to reinforce the weakened vessel wall
D) Treatment for venous thrombosis; administering thrombolytic agents directly into the clot