You have a Skype for Business Server 2015 infrastructure that has Enterprise Voice enabled. You need to ensure that user

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You have a Skype for Business Server 2015 infrastructure that has Enterprise Voice enabled.
You need to ensure that users can place a call on hold, and can then retrieve the call later by dialing a number from any phone. The solution must ensure that if a call is on hold for four minutes, the call is automatically forwarded to the receptionist.
Which two action should you perform? Each correct answer presents part of the solution.

A. Modify the global dial plan.
B. Modify the Call Park settings.
C. Modify the global voice policy.
D. Create a Call Park orbit.
E. Create a static route.