What Should the Question Mark (?) in the Following for Statement

Multiple Choice

What should the question mark (?) in the following for statement be replaced with, so that the statements will calculate 5!? In [1]: factorial = 1
In [2]: for number in range(5, 0, ?) :
) ..: factorial *= number
) ..:
In [3]: factorial
Out[3]: 120

A) 1
B) 0
C) -1
D) None of the above.