A Communications Service Operator Is Planning to Start Migrating Its

A communications service operator is planning to start migrating its complex network infrastructure to cloud by NFV, including a pool of media gateway servers, routers, and firewalls. The network elements consist of two controller cards, two redundant drives, and redundant ASIC boards. Which of the following virtualization requirements outlines the correct deployment plan?

A) The deployment and implementation should be on public cloud space with network elements shared across different functions with central database/storage.
B) The deployment and implementation should be on hosted private cloud space with a VM for each controller card, ASIC board, and storage mapped to existing databases.
C) The deployment and implementation should be done in a hybrid model with VMs for controller cards and storage hosted in a private cloud; any functional cards are in a public cloud.
D) The deployment and implementation should be done using SaaS; only configuration of database storage needs to be considered during deployment.