Which is a valid statement that can create a C$++$ function named "findMin$()"?$

Group of answer choices

void findMin$($int x$)\{$ return $2*$x; $\}$

void findMin$()\{$ return $3*6$; $\}$

double findMin$($int x$)\{$ return $2*$x; $\}$

int findMin$($int x$)\{$ cout $<<2*$x; $\}$

int findMin$()\{$ cout $<<3*6$; $\}$

None of the options