单选题A customer’s new rack contains 12 x p655 servers. The customer currently has an HMC with one 128-port async adapter with a rack mounted 16-port RAN. The HMC is already attached to two pSeries p630s. What upgrades， if any， are needed to the HMC to su
题目
单选题
A customer’s new rack contains 12 x p655 servers. The customer currently has an HMC with one 128-port async adapter with a rack mounted 16-port RAN. The HMC is already attached to two pSeries p630s. What upgrades， if any， are needed to the HMC to support the new p655 servers？（）
A
No upgrades are needed.
B
Add another 16-port RAN.
C
Add an 8-port async adapter.
D
Add an additional 128-port adapter.