MCQ PracticeWhich of the following is a correct initialization of variables to null strings?Subject: Computer Science EngineeringTopic: UnixAx=Bx=' 'Cx=" "Dx=, x=' ', x=" "Correct 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