Charles Ltd. and Carter Industries are subsidiaries of Kellar Manufacturing. All three companies are solely involved in manufacturing. Kellar would like to aggregate information about Charles and Carter as a single operating segment. Which of the following is NOT a requirement for doing so? Select answer from the options below Charles and Carter individually earn revenue greater than 10% of Kellar's revenue. Charles and Carter both serve the same type or class of customer. Charles' and Carter's production processes are the same in nature. Charles' and Carter's methods of product distribution are basically the same.