input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** What is the function of filtration process while taking radiographs?   (A) Remove the short wavelength photons   (B) Remove the portion of long wavelength photons   (C) To increase the radiation dose to patient   (D) To increase scatter of secondary radiation
output: ['(B) Remove the portion of long wavelength photons <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Remove the short wavelength photons  (B) Remove the portion of long wavelength photons  (C) To increase the radiation dose to patient  (D) To increase scatter of secondary radiation <> possible answers', '  What is the function of filtration process while taking radiographs? <> context']