Question

You are developing an applicaton that will convert data into multple output formats.
The applicaton includes the following code. (Line numbers are included for reference only.)

You are developing a code segment that will produce tab-delimited output. All output routnes implement the following interface:

You need to minimize the completon tme of the GetOutput() method.
Which code segment should you insert at line 06?

• A. string output = null;
  for (int i = 1; iterator.MoveNext(); i++)
  {

  output = string.Concat(output, iterator.Current, suffix(i));

  }
  return output;
• B. var output = new StringBuilder();
  for (int i = 1; iterator.MoveNext(); i++)
  {

  output.Append(iterator.Current);
  output.Append(suffix(i));

  }
  return output.ToString();
• C. string output = null;
  for (int i = 1; iterator.MoveNext(); i++)
  {

  output = output + iterator.Current + suffix(i);

  }
  return output.ToString();
• D. string output = null;
  for (int i = 1; iterator.MoveNext(); i++)
  {

  output += iterator.Current + suffix(i);
  

  }
  return output;