Scenario: A Citrix Engineer created four application layers with different applications at different time stamps as show

[answerhappygod]

Scenario: A Citrix Engineer created four application layers with different applications at different time stamps as shown below:
App Layer A `" Microsoft Office Professional `" 15/08/2019, 14:28
App Layer B `" Adobe Acrobat Reader and Cisco Webex `" 14/07/2019, 11:45
App Layer C `" Active Directory Users & Computers, Citrix Studio `" 20/08/2019, 16:10
App Layer D `" Google Chrome and GoToMeeting `" 27/07/2019, 10:35
Which layer would hold the highest priority in this scenario?

A. App Layer A
B. App Layer D
C. App Layer B
D. App Layer C