What is the primary difference between the continuous distributions and the discrete distributions? i) Discrete distributions represent situations concerning the count of items in the population, while continuous distributions are concerned with measurements of items in the population. ii) The probability of a single event may be zero in a discrete distribution. iii) The probability of a single event is always zero in a continuous distribtion. iv) We are concerend about probability ranges like P(x < 4) only in a continuous distribution. Items (i), (ii), and (iv) Items (i), (ii), and (iii) Items (i), (ii), (iii), and (iv) None of the items