Which of the following code displays the area of a circle if the radius is positive.
a. if (radius != 0) System.out.println(radius * radius * 3.14159);
b. if (radius >= 0) System.out.println(radius * radius * 3.14159);
c. if (radius > 0) System.out.println(radius * radius * 3.14159);
d. if (radius <= 0) System.out.println(radius * radius * 3.14159);
c Positive means > 0.
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