A customer has an existing IBM System Storage DS8700 2-way model with 8 mega packs of 300 GB disks and 16 fibre ports.  How many additional fibre ports and mega packs can be installed in the base frame（）

• A、16fibre ports and 0 mega packs
• B、4fibre ports and 8 mega packs
• C、8fibre ports and 4 mega packs
• D、12fibre ports and 0 mega packs