在C#中,下列结构或者类定义正确的是（）

A. public struct Person{string name;int age;public void ShowName(){ Console.WriteLine(name); }}
B. public struct Person{string name;int age;public Person(){Conssole.WriteLine(name); }}
C. public class Person{string name;int age;public Person(){Console.WriteLine(name); }}
D. public class Person{string name;int age;public Person(string name){ Console.WriteLine(name); }}