input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In an animal model, the phenomenon of vasomotor reversal of dale can be demonstrated by:   (A) Stimulation of alpha-1 followed by stimulation of beta-2   (B) Block of alpha-1 followed by stimulation of beta-2   (C) Stimulation of alpha-1 followed by block of beta-2   (D) Stimulation of beta-1 receptor followed by block of beta-2 receptor
output: ['(B) Block of alpha-1 followed by stimulation of beta-2 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Stimulation of alpha-1 followed by stimulation of beta-2  (B) Block of alpha-1 followed by stimulation of beta-2  (C) Stimulation of alpha-1 followed by block of beta-2  (D) Stimulation of beta-1 receptor followed by block of beta-2 receptor <> possible answers', '  In an animal model, the phenomenon of vasomotor reversal of dale can be demonstrated by: <> context']