A pSeries technical specialist is performing a solutions assurance with a customer for a new single-frame 10-node p655 system being attached to a currently installed HMC. Which of the following questions should be asked to gather all the required information to determine whether the p655 solution can connect to the HMC？（）
- AAre there at least ten RS-232 ports available on the HMC？
- BAre there at least ten RS-422 ports available on the HMC？
- CAre there at least ten RS-232 and two RS-422 ports available on the HMC？
- DAre there at least two RS-232 and ten RS-422 ports available on the HMC？