There are referring to C# Which of the following is right way of declaring an array in C$\backslash$#$?$ int$[]$ intArray $=$ new int$[]$; int intArray$[]=$ new int$[5]$; int$[]$ intArray $=$ new int$[5]$; int$[5]$ intArray $=$ new int$[]$;What is a Nullable type in C$\backslash$#$?$ It allows assignment of null to reference type. It allows assignment of null to value type. It allows assignment of null to static class. None of the above.