You are provided with a snippet of C# code involving a GUI application (WPF/WinForms) that calls an async method synchronously using .Result or .Wait(), causing a deadlock. Analyalyze the synchronization context to explain why the deadlock occurs. Rewrite the code to be fully asynchronous throughout the call stack. Discuss the usage of ConfigureAwait(false) and when it is appropriate to use it in library code versus application code.