Which of the following statements is TRUE for the function prototype declaration given below?

1. AP is a function that accepts an argument which is a character array and returns a pointer to an integer quantity.
2. BP is a function that accepts an argument which is a pointer to a character array and returns a pointer to an integer quantity.
3. CP is a pointer to a function that accepts an argument which is an array of character pointers, and returns a pointer to an integer quantity.
4. DP is a pointer to function that accepts an argument which is a character array and returns a pointer to an integer quantity.