Unwanted line of text produced in Word, C# Automation

            //first line
            Word.Paragraph paragraph;
            paragraph = oDoc.Content.Paragraphs.Add(ref oMissing);
            Word.Range para = paragraph.Range;
            para.Font.Size = 10;
            para.Font.Name = "Arial";
            para.Font.Bold = 1;
            para.Text = "\r\n";
            paragraph.Format.SpaceAfter = 24;
            para.InsertParagraphAfter();
            para.ParagraphFormat.Alignment = Word.WdParagraphAlignment.wdAlignParagraphCenter;
            
///////////////Here is the line of 10pt font

            //next line
            Word.Paragraph oPara1;
            oPara1 = oDoc.Content.Paragraphs.Add(ref oMissing);
            Word.Range rng = oPara1.Range;
            rng.Font.Size = 14;
            rng.Font.Name = "Arial";
            rng.Font.Bold = 1;
            rng.Text = "SOCIAL ASSESSMENT";
            oPara1.Format.SpaceAfter = 24;    //24 pt spacing after paragraph.
            rng.InsertParagraphAfter();
            rng.ParagraphFormat.Alignment = Word.WdParagraphAlignment.wdAlignParagraphCenter;