A.The 1-way p615 cannot be upgraded to a 2-way p615.
B.The 1-way p615 can be upgraded to a 2-way p615 should additional capacity be required.
C.The p615 can be upgraded to a POWER5-based processor.
D.The p615 is not a good solution, as it does not take advantage of the Advanced POWER Virtualization features.