1| def factorial(some_number): 2| if [1]: 3| return 1 4| else: 5| return [2] 

Above is a partial definition for a function called factorial. Select the code that could fill in each blank so that factorial(a_number) will return the correct factorial of that number. Remember, the factorial of a number is the product of every number from that number to 1. For example, factorial(5) = 5 * 4 * 3 * 2 * 1 = 120.