What does the following code depicts? 1. System.Nullable count; 2. bool? done;

• A. Code 1 declares the objects of nullable of type Nullable defined in the System namespace
• B. Code 2 declares a nullable type in much shorter and in more commonly used way using ‘?’
• C. Both Code 1 declares the objects of nullable of type Nullable defined in the System namespace & Code 2 declares a nullable type in much shorter and in more commonly used way using ‘?’
• D. None of the mentioned