The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The yellowish white soft sticky deposit loosely adherent present on tooth surface is   (A) Materia alba   (B) Food debris   (C) Plaque   (D) Calculus
['(A) Materia alba <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Materia alba \n (B) Food debris \n (C) Plaque \n (D) Calculus <> possible answers', '  The yellowish white soft sticky deposit loosely adherent\npresent on tooth surface is <> context@']