A void function named calcEndingBalance is passed the values stored in two int variables...

A void function named calcEndingBalance is passed the values stored in two int variables. Which of the following function prototypes is correct for this function?

a. void calcEndingBalance(int, int);

b. void calcEndingBalance(int, int)

c. void calcEndingBalance(int &, int &);

d. int calcEndingBalance(void);