Which of the following is NOT a valid value for the border-style property?

A technician has installed an additional CPU into a server, but now the server is failing to pass POST. After verifying the CPU speed and multiplier, which of the following does the technician need to check for potential causes?

A. ECC B. CAS C. Stepping D. Bus size

Use the ____________ method to programmatically close an app.

a) Application.Shutdown b) Application.Exit c) Application.Current.Exit d) Application.Current.Shutdown