In C#, a void function "func" will be passed three double arguments, X, Y, and Z. Y is optional with default value of 1.0. Which of the following is correct? Select one: a.void func (double XX=1,2) b.void func (double X, double Y-1.0, double Z) c. void func (double X, double Z, double Y-1.0) d. None of the above