A. StringBuilder sb = new StringBuilder("This is my character String Builder");
char[] b = { 'c', 'l', 'a', 's', 's', 'r', 'i', 'g', 'h', 't', 'd', 'o', 'd' };
StringWriter sw = new StringWriter(sb);
Object obj=(Object)b;
sw.Write(obj);
Console.WriteLine(sb);
sw.Close();
B. StringBuilder sb = new StringBuilder("This is my character String Builder");
char[] b = { 'c', 'l', 'a', 's', 's', 'r', 'i', 'g', 'h', 't', 'd', 'o', 'd' };
StringWriter sw = new StringWriter(sb);
sw.Write(b);
Console.WriteLine(sb);
sw.Close();
C. StringBuilder sb = new StringBuilder("This is my character String Builder");
char[] b = { 'c', 'l', 'a', 's', 's', 'r', 'i', 'g', 'h', 't', 'd', 'o', 'd' };
string str=new string(b);
StringWriter sw = new StringWriter(sb);
sw.Write(str);
Console.WriteLine(sb);
sw.Close();
D. StringBuilder sb = new StringBuilder("This is my character String Builder");
char[] b = { 'c', 'l', 'a', 's', 's', 'r', 'i', 'g', 'h', 't', 'd', 'o', 'd' };
StringWriter sw = new StringWriter(sb);
sw.Write(b, 0, 5);
Console.WriteLine(sb);
sw.Close();
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