What is the best recommendation to achieve the goal?

Your network contains one Active Directory domain named contoso.com.
Currently, your company is not licensed for the Microsoft Desktop Optimization Pack (MDOP).
Users have a locally installed application named App1. App1 stores its configuration in the registry.
A new version of the application named App2 is developed. Currently, App1 and App2 cannot run
on the same computer due to incompatible registry settings.
Users must use App1 and App2 on the same computer for several months to verify that App2
shows the same results as App1.
You need to recommend a solution that will enable users to use both versions of the application.
Users must be able to use the applications even if their computer is not connected to the network.
What is the best recommendation to achieve the goal? More than one answer choice may achieve
the goal. Select the BEST answer.

A.
a compatibility fix

B.
a RemoteApp program

C.
an Microsoft Application Virtualization (App-V) package

D.
a virtual machine