Please answer these questions. Thank you!

2. [15 pts] For each of the following C functions (given as function prototypes), which register is used to pass each of the parameters? Which register(s) is used to pass the return value? Note: uint64 t is unsigned 64-bit integer. a. short add2(short a, short b); b. uint16-t add3(uint8-t a, uint8_t b, uinte_t c); c. unsigned fibonacci(unsigned n) d. char* mystrcmp (char *dst, char *src); e. uint64 t sumofArray(uint32 t X[], int N)