The Function Prototype Double MySqrt Int X );

Multiple Choice

The function prototype
Double mySqrt int x ) ;

A) Declares a function called mySqrt which takes an integer as an argument and returns a double.
B) Defines a function called double which calculates square roots.
C) Defines a function called mySqrt which takes an argument of type x and returns a double.
D) Declares a function called mySqrt which takes a double as an argument and returns an integer.