How many function calls exist in the following code?

int Calc$1($int a$,$ int b$)\{$

$$ return a $+$ b $/2$;

$\}$

int Calc$2($int a$,$ int b$)\{$

$$ return a $*$ b $/100$;

$\}$

int main $()\{$

$$ int x;

$$ int y;

$$ x $=$ Calc$1(5,3)$;

$$ cout $<<$ x;

$$ y $=$ Calc$2(5,3)$;

$$ cout $<<$ y;

$$ cout $<<$

$$ Calc$2(5,3)$;

$\}$

Group of answer choices

$3$

$4$

$5$

$2$