C#.NET — Consider the structure and usage below. Which statements are correct? struct Book { private string name; protected int totalpages; public Single price; public void Showdata() { Console.WriteLine(name + " " + totalpages + " " + price); } Book() { name = ""; totalpages = 0; price = 0.0f; } } Book b = new Book(); Evaluate the following claims: 1) We cannot declare totalpages as protected. 2) We cannot declare name as private. 3) We cannot define a zero-argument constructor inside a struct. 4) We cannot declare price as public. 5) We can define a Showdata() method inside a struct.

Introduction / Context:
Structs in C# are value types with specific rules. Some class-like features are allowed, while others are restricted, especially regarding inheritance and constructors.

Given Data / Assumptions:

• The struct declares private, protected, and public members, plus a parameterless constructor and a method.
• We judge each claim for correctness.

Concept / Approach:
Structs cannot be inherited; therefore, a protected accessibility level (which relies on inheritance) is not meaningful and is disallowed. Historically, user-defined parameterless constructors in structs were not allowed; the runtime provides a default parameterless constructor that zero-initializes fields. Methods are allowed in structs. Private fields and public fields are also allowed.

Step-by-Step Solution:

Verification / Alternative check:
Attempting to compile the sample as-is results in errors for protected and the explicit parameterless constructor.

Why Other Options Are Wrong:

• A/C/D: Each includes at least one false statement (2 or 4).
• None of these: Incorrect because 1, 3, and 5 are true.

Common Pitfalls:
Assuming class rules apply verbatim to structs; they do not due to lack of inheritance.

Final Answer:
1, 3, 5