MCQ PracticeWhich command is used to copy all files from drive a with extension .txt to the currently logged drive and directory?Subject: Computer Science EngineeringTopic: Disk Operating System (Dos)ACopy a. *.txtBCopy *.txt a:CCopy *.txt c:DCopy *.txt all.txtCorrect Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the