Consider the following small program. What will the output be?

def foo(x): z = 0 while x > 0: x = x - 1 a = x * 2 while a > x: a = a - 2 z = z + 1 return z x = foo(5) print(x)

1

4

none of these

7

3

10

5

2

8

6

0

9