URGENT ASAP!!

ASAP URGENT!!!

4. Which of the following iterative methods is equivalent to this recursive method?

int foo (int n) {

if (n < 1)

return 0;

return n + foo (n - 1);

}

Group of answer choices

1) int foo (int n) { int x = 0; while (n > =0) { X += n;

n- -;

return x:

2) none of these

int foo (int n) {

int x = 0;

while (n > 0) {

n--;

X += n;

}

return x;

}

4) int foo (int n) { int x = 0; while (n >= 0) {

n - -; X += n; } return x;

}