Which of the following statements are correct about an enum used inC#.NET? 1.To use the keyword enum, we should either use [enum] or System.Enum. 2.enum is a keyword. 3.Enum is class declared in System.Type namespace. 4.Enum is a

• A. 2, 4
• B. 1, 3
• C. 3, 4
• D. 2, 5