Count caller/callee-saves for the code shown when foobar() is called once. please explain in terms of numbers. especially part b

Problem 2: Caller/Callee Save (20 points) Count caller/callee saves for the code shown when foobar() is called once. void foo) int g 4: grand ); int h100; h-g + rand (); void bar) f-rand ) e rand) int foobar) f int a 0, b 3, c 5; foo ) for (; a