This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
[{'content': 'Most impoant factor for a test to be a good screening test is ? \nSelect and explain. \nA. Specificity, B. Sensitivity, C. Reliability, D. Predictive value', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref : Parks 23rd edition pg 138 An ideal screening test should have 100 % sensitivity.', 'role': 'assistant'}]