NCIR的云解决方案都集成了哪些openstack服务？
A.Nova, Neutron, Swift, Keystone, Glance, Trove, Horzion, Celiometer, Heat
B.Nova, Neutron, Keystone, Glance, Cinder, Horzion, Celiometer, Trove, Sahara
C.Nova, Neutron, Swift, Cinder, Horzion, Sahara
D.Nova, Neutron, Keystone, Glance, Cinder, Horzion, Celiometer, Heat
正确答案是D