The following are multiple choice questions (with answers) about medical knowledge.   **Question:** ECG with "mean" axis of 90deg. In which lead there would be the maximum voltage of R wave?   (A) III   (B) I   (C) aVF   (D) aVL
['(C) aVF <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) III \n (B) I \n (C) aVF \n (D) aVL <> possible answers', '  ECG with "mean" axis of 90deg. In which lead there would be the maximum voltage of R wave? <> context@']