What will be the output of the following C# code snippet?

class UnsafeCode
{
    struct MyStruct
    {
        public int a;
        public int b;
        public int Sum() 
       { 
           return a / b; 
       }
   }
   unsafe static void Main()
   {
       MyStruct o = new MyStruct();
       MyStruct* p; 
       p = &o;
       p->a = 60; 
       p->b = 15; 
       int c = 30;
       Console.WriteLine("Value is : " + p->Sum()*c);
       Console.ReadLine();
   }
}

A. Compile time error

B. 120

C. Run time error

D. 4

Answer: Option B