MCQ PracticeWhich of the following is an invalid command?Subject: Computer Science EngineeringTopic: UnixA:r file01B:e file01C:e#D:w # file01Correct Answer: DPractice 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