A technology firm is opening a brick$-$and$-$mortar location and needs to determine if they can pay more for higher network speeds or if they need to sacrifice some speed to stay on budget. Which of the following options can the tech firm consider when designing the configuration of their data center?

A$.$Software$-$defined network

B$.$Branch office vs$.$ on$-$premises datacenter vs$.$ colocation

C$.$Infrastructure layer

D$.$Backbone