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A security analyst is inspecting pseudocode of the following multithreaded application: 1. perform daily ETL of data 1.1 validate that yesterday's data model file exists 1.2 validate that today's data model file does not exist 1.2 extract yesterday's data model 1.3 transform the format 1.4 load the transformed data into today's data model file 1.5 exit following security concerns is evident in the above pseudocode? Time of checktime of use Resource exhaustion Improper storage of sensitive data Privilege escalation ? ? O D