Valid Code for Creating a SqlConnection Object in ADO.NET would be :
a) SqlConnection conn = new SqlConnection( "Data Source=(local);Initial Catalog=Northwind;Integrated Security=SSPI");
b) SqlConnect conn = new SqlConnection( "Data Source=(local);Initial Catalog=Northwind;Integrated Security=SSPI");
c) SqlConnection conn = new SqlConnect( "Data Source=(local);Initial Catalog=Northwind;Integrated Security=SSPI");
d) All of the mentioned