Assume you have declared a method as follows: public static double DisplayData(string name = "XX", double amount = 10.0) Which of the following is an illegal method call? a. DisplayData(name :...

Assume you have declared a method as follows: public static double DisplayData(string name = "XX", double amount = 10.0) Which of the following is an illegal method call?

a. DisplayData(name : "Albert");

b. DisplayData(amount : 200, name : "Albert");

c. DisplayData(amount : 900.00);

d. All of these are legal.