The reason why people associate diverse groups in an organization with 'high cost' is due to the following reasons: A. the cost incurred for managing ambiguity that seems to appear in an organization with diverse groups B. the costs incurred in training diverse groups on cultural sensitivity and communication C. the output of diverse groups is always lower than those of homogeneous groups, regardless of the type of tasks. D. all of the above are correct answers. E. only a and b are correct answers