The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Law of pulse oxymetry is based on   (A) Doppler's law   (B) Pascal's law   (C) Poille's law   (D) Beer Lambert's law
["(D) Beer Lambert's law <> answer", 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Doppler's law \n (B) Pascal's law \n (C) Poille's law \n (D) Beer Lambert's law <> possible answers", '  Law of pulse oxymetry is based on <> context@']