The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is a major pattern of accessory canals in mandibular first molar is?   (A) Single furcation canal which is extend from pulp chamber to intra-redicular region   (B) A lateral canal extends from coronal third to furcal region particular in distal canal   (C) Presence of both lateral and furcal canal   (D) Pattern is variable and age dependent
['(B) A lateral canal extends from coronal third to furcal region particular in distal canal <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Single furcation canal which is extend from pulp chamber to intra-redicular region \n (B) A lateral canal extends from coronal third to furcal region particular in distal canal \n (C) Presence of both lateral and furcal canal \n (D) Pattern is variable and age dependent <> possible answers', '  Which of the following is a major pattern of accessory canals in mandibular first molar is? <> context@']