Which statement about defining process improvement actions using defect report information is TRUE?

Information about defect location can be used to assess the effectiveness of test processes at finding defects

Information about the phase of introduction of defects can identify the lifecycle stages in which most defects are created

Information about defect root causes can be used to enable refactoring of troublesome components

Information about duplicate and rejected defect reports can be used to assess the quality of debugging and fixing the defects