您已创建一个名为 CalcSalary，将确定 Certkiller.com 员工的薪酬类的责任。CalcSalary 类包括员工的薪酬递增和递减的方法。下面的代码包含在 CalcSalary 类中：（）public class CalcSalary {// for promotionspublic static bool IncrementSalary (Employee Emp, double Amount){if (Emp.Status == QuarterlyReview.AboveGoals)Emp.Salary += Amount;return true;

A.public delegate bool Salary (Employee Emp, double Amount);
B.public bool Salary (Employee Emp, double Amount);
C.public event bool Salary (Employee Emp, double Amount);
D.public delegate void Salary (Employee Emp, double Amount);