input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** If the interstitial hydrostatic pressure is 2 mm Hg, interstitial oncotic pressure is 7 mm Hg and capillary hydrostatic pressure is 25 mm Hg. What should be the capillary oncotic pressure to allow a net filtration pressure of 3 mm Hg?   (A) 20   (B) 21   (C) 23   (D) 27
output: ['(D) 27 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 20  (B) 21  (C) 23  (D) 27 <> possible answers', '  If the interstitial hydrostatic pressure is 2 mm Hg, interstitial oncotic pressure is 7 mm Hg and capillary hydrostatic pressure is 25 mm Hg. What should be the capillary oncotic pressure to allow a net filtration pressure of 3 mm Hg? <> context']