A company uses the COPE enterprise deployment model. Every six months they delete outdated sales data from the mobile devices. However, sometimes users submit a help desk ticket to restore personal data that was accidentally deleted. How could this problem be prevented?

a$.$ Use the CYOD enterprise deployment model.

b$.$ Use a sandbox to separate corporate and personal data.

c$.$ Use containerization. x

d$.$ Use a folder for corporate data and another for personal data.