Consider the following function definition. Double funcTest (string name, char u, int num, double y) { } Which of the following is the correct function prototype for the function funcTest? a) double funcTest (string, char, int, double); b) int funcTest (string n, char ch, int x, double t); c) double funcTest (name, u, num, y); d) void funcTest (string, char, int, double);