For an array $S$ defined as follows:

const int size $=20$;$\frac{,}{\frac{?}{?}}$ size $-$ Size of the array

char Str$[$size$]=$ "Hello, Worldl"; $//$ Str $-$ Array of chars

int lower; $//$ lower $-$ Number of lowercase letters in the array of chars

Select the combination of the function call and the corresponding function header for a function Lowercase that will return the number of lowercase letters, lower, found in string $S.$