单选题The sales team has brought in the pSeries technical specialist to recommend the best solution to win the business.   The customer wants the lowest purchase cost four-disk solution using an external I/O solution.  Which of the following offerings provid

The sales team has brought in the pSeries technical specialist to recommend the best solution to win the business.   The customer wants the lowest purchase cost four-disk solution using an external I/O solution.  Which of the following offerings provides the required base function at the lowest cost？（）