The following are multiple choice questions (with answers) about medical knowledge.   **Question:** All of the following are resorbable Guided Tissue Regeneration (GTR) except?   (A) Poly lactic acid   (B) Poly galactic acid   (C) Polylactic acid, polyglycolic acid, and trimethylene carbonate   (D) PTFE
['(D) PTFE <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Poly lactic acid \n (B) Poly galactic acid \n (C) Polylactic acid, polyglycolic acid, and trimethylene carbonate \n (D) PTFE <> possible answers', '  All of the following are resorbable Guided Tissue Regeneration (GTR) except? <> context@']