You work as a Windows Developer for PassGuide.com. You are required to create a WCF 4.0
service that will be used by multiple clients afterwards. According to the requirements, one service
object should handle all service calls and this service object should not be recycled.
Which of the following values for the session instance will You use to accomplish the task?

A.
Single

B.
Reentrant

C.
PerCall

D.
PerSession

Explanation: