The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The function of a sprue is to:   (A) Form an opening for molten metal to enter the mold   (B) Help polish cast restorations   (C) Eliminate air bubbles on the wax pattern   (D) Reproduce fine detail
['(A) Form an opening for molten metal to enter the mold <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Form an opening for molten metal to enter the mold \n (B) Help polish cast restorations \n (C) Eliminate air bubbles on the wax pattern \n (D) Reproduce fine detail <> possible answers', '  The function of a sprue is to: <> context@']