<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:The World Health Organization suggests the use of a new rapid diagnostic test for the diagnosis of malaria in resource-limited settings. The new test has a sensitivity of 70 and a specificity of 90 compared to the gold standard test blood smear. The validity of the new test is evaluated at a satellite health center by testing 200 patients with a positive blood smear and 150 patients with a negative blood smear. How many of the tested individuals are expected to have a false negative result?? A: 155, B: 15, C: 195, D: 60, E: 135,  <response>: This is a question about evaluating the performance of a new diagnostic test compared to a gold standard test. We are given information about the sensitivity 70 and specificity 90 of the new test. We are also told that it was evaluated on 200 patients with positive blood smears who should test positive and 150 patients with negative blood smears who should test negative. To calculate the number of false negatives, we focus on the 200 patients who had positive blood smears true positives. Since the new test has 70 sensitivity, we expect 70 of these 200 patients to test positive, which is 140 patients. The remaining 200 - 140 60 patients would falsely test negative.D: 60 