A programmer is reading some documentation about the Math class in the standard Java library. The documentation shows another class definition containing the following example of client code: 
System.out.println(Math.sin(90.0));
Hence, which of the following does s/he correctly conclude?

(a) In the Math class, sin is an instance method.
(b) In the Math class, sin is a class method.
(c) In the Math class, sin has void return type.
(d) In the Math class, sin has non-void return type.
(e) In the Math class, sin is private.
(f) In the Math class, sin is public.

Select all correct answers.