Which of the following will divide evenly into 407,406,520?  Answers.
A) 11 B) 21 C) 4 D) 31 E) 41
Rule:   4: Last two digits should be divisible by 4   the last two digits are 00, which are divisible by 4   Answer: 4
<result>C</result>
Which of the following will divide evenly into 407,406,520?