Which of the following method declarations are valid declarations?

Select the three correct answers.

(a) void compute(int… is) { }

(b) void compute(int is…) { }

(c) void compute(int… is, int i, String… ss) { }

(d) void compute(String… ds) { }

(e) void compute(String… ss, int len) { }

(f) void compute(char[] ca, int… is) { }