which of the following code samples will execute a command line program..., C#, .Net Technology

Question:Which of the following code samples will execute a command-line program in C# and return its STD OUT results?

A System.Diagnostics.Process pProcess = new System.Diagnostics.Process(); pProcess.StartInfo.FileName = strCommand; 
pProcess.StartInfo.Arguments = strCommandParameters; pProcess.StartInfo.UseShellExecute = false; 
pProcess.StartInfo.RedirectStandardOutput = true; pProcess.Start(); 
string strOutput = pProcess.StandardOutput.ReadToEnd(); 
pProcess.WaitForExit(); 
B Process p = new Process();
p.StartInfo.UseShellExecute = true 
p.StartInfo.RedirectStandardOutput = false 
p.StartInfo.FileName = "YOURBATCHFILE.bat"; 
p.Start(); string output = p.StandardOutput.ReadToEnd(); 
p.WaitForExit(); 
C System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("program_to_call.exe"); 
psi.RedirectStandardOutput = true; 
psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; 
psi.UseShellExecute = false; 
System.Diagnostics.Process proc System.Diagnostics.Process.Start(psi);; 
System.IO.StreamReader myOutput = proc.StandardOutput; 
proc.WaitForExit(2000); 
if (proc.HasExited) { 
string output = myOutput.ReadToEnd(); 
} 
D System.Diagnostics.Process pProcess = new System.Diagnostics.Process(); pProcess.StartInfo.FileName = strCommand; 
pProcess.StartInfo.Arguments = strCommandParameters; pProcess.StartInfo.UseShellExecute = false; 
pProcess.StartInfo.RedirectStandardOutput = true; 
pProcess.StartInfo.WorkingDirectory = strWorkingDirectory;
pProcess.Start(); 
string strOutput = pProcess.StandardOutput.ReadToEnd();
 pProcess.WaitForExit();

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Question:Which of the following code samples will execute a command-line program in C# and return its STD OUT results?

B Process p = new Process(); p.StartInfo.UseShellExecute = true p.StartInfo.RedirectStandardOutput = false p.StartInfo.FileName = "YOURBATCHFILE.bat"; p.Start(); string output = p.StandardOutput.ReadToEnd(); p.WaitForExit();

C