Question

Choose the statement which defines the Nullable type Correctly:

(a) A special version of a value type that is represented by a structure

(b) A nullable type can also store the value null

(c) Nullable types are objects of System.Nullable, where T must be a non nullable value type

(d) All of the mentioned

Answer 1

The correct answer is (d) All of the mentioned

The explanation: A nullable type is a special version of the value type that is represented by a structure. In addition to the values defined by the underlying type, a nullable type can also store the value null. Thus, a nullable type has the same range and characteristics as its underlying type. It simply adds the ability to represent a value which indicates that a variable of that type is unassigned. Nullable types are objects of System.Nullable<T>, where T must be a nonnullable value type.