Question 1 2 pts Choose the types of testing that best complete the following sentence: testing is characterized [ Select] testing can be based on source code, whereas [Select] [ Select ] by being based on user requirements only. regression black box white box integration Question 2 Regression testing should be performed when: (select all that apply) a bug in the automated testing code has been fixed the implementation of a module has been changed to improve its efficiency a bug in the software is fixed the structure of an external data file is altered