a) Add the appropriate data annotation attributes to the below model class to ensure name field is not empty and address between 5 and 25 characters. (3 marks) public class User } b) Mention the numbers of four syntax errors in the code below. Re-write code in correct way. (4 marks) public static void Main(string[] args) { 9 10 - 11 12 13 - 14- 15 16- 17 18- 19 20 21 public string name {get; set; } public string address {get; set;} 222 23 } } Console.WriteLine "Hello Guys!"); int[] marks (100,87,12,45.23); foreach(int m at marks) { if(m>=85){ Console.WriteLine("You got HD"); }else if (m>=50) { }else{ Console.WriteLine("You Console.WriteLine("You just Pass") failed");