basicSSCDuring revision of Exponential Distribution, which option correctly states its core definition?AFor rate λ>0, the exponential density is f(x)=λe^-λx for x≥0.BA Poisson variable models counts in a fixed interval with rate parameter λ.CA random variable assigns a real number to each outcome of a random experiment.DFor a discrete variable, E(X)=Σx p(x).Submit AnswerReport Question
