Task: Question Answering
Input (English): Question: Which of the following statements about the meta-analysis is correct? 
 Options:  <1> The objective of the meta-analysis is to quantitatively summarize the results of the studies carried out. <2> The meta-analysis is a large clinical trial. <3> It would be desirable to avoid negative clinical trials, as well as unpublished ones, to prevent selection biases. <4> By definition, all meta-analyzes are a reliable source of evidence, the quality of the trials being irrelevant or if they include the results of randomized clinical trials. <5> The meta-analysis will correct the errors of carrying out the tests.
Output (English): 1