How does IVK manage mobile devices?

a$.$ IVK doesn't use mobile phones $-$ they are too old and need to go undertake a BPR initiative

b$.$ IVK let's each department acquire their own Mobile devices

c$.$ IT at IVK acquires mobile devices on behalf of the entire company

d$.$ IVK implements a BYOD $($Bring Your Own Device$)$ policy regarding mobile phones