m$.$becker.com$/$assignments$/48641/$study$?$review$=$false

Retailer Alex Co$.$ recently purchased a new point$-$of$-$sale $($POS$)$ system to replace its legacy system for transaction processing and is evaluating different approaches to integrate the new software. Alex decided to take a parallel implementation approach as it wants to be able to switch back to the legacy system if it encounters complications. Which of the following change management controls does this reflect?

A$.$ Reversion access

B$.$ Post$-$implementation testing

C$.$ Separation of duties

D$.$ Standardized change requests