Given the function prototype and variable declarations, which of the following is a valid function call?

void tryOut $($ int, char, int&$,$ float&$)$; $//$ function prototype

int a $=4,$ b $=0$; $//$variable declarations

float y;

char c;

Group of answer choices

tryOut $($a $+$ b$,$b$,$ b$,$ y$)$;

tryOut $(3,$a$,5,$ y$)$;

tryOut $($a$,$ c$,$ a $*$ b$,$ y$)$;

tryOut $(8,$t$,$ b$,7\mathrm{.}8)$;