In the following program segment, which variable is the counter and which is the accumulator?

$$ int x $=0,$ y $=0,$ z$=0$;

$$ cout$<<$How many numbers do you wish to enter?

$$;

$$cin $>>$x;

$$ while $($z$++<$ x$)$

$\{$

$$ int a;

$$ cout$<<$Enter a number:

$$;

$$ cin$>>$a;

$$ y $+=$a;

$\}$

$$ cout$<<$The sum of those number is $<<$ y $<<$ endl;

Group of answer choices

y is the counter and x is the accumulator

y is the counter and z is the accumulator

y is the counter and a is the accumulator

z is the counter and a is the accumulator

z is the counter and y is the accumulator

z is the counter and x is the accumulator