Assume you have declared a method with the following header: public static void DisplayScores(params int[] scores) Which of the following method calls is valid? a. DisplayScores(20); b....

Assume you have declared a method with the following header: public static void DisplayScores(params int[] scores) Which of the following method calls is valid?

a. DisplayScores(20);

b. DisplayScores(20, 33);

c. DisplayScores(20, 30, 90);

d. All of the above are valid.