You need to regenerate the service proxies to include task-based asynchronous method signatures. Which
command should you use?
A.
aspnet_regiis.exe /t:code http://localhost:62965/UploadCallbackService.svc
B.
svcutil.exe /t:code http://localhost:62965/UploadCallbackService.svc
C.
aspnet_compiler.exe /t:code http://localhost:62965/UploadCallbackService.svc
D.
aspnet_regiis.exe /t:code http://localhost:62965/UploadService.svc
E.
svcutil.exe /t:code http://localhost:62965/UploadService.svc