Trivial Tuesday - are you smarter than a sixth grader?

First, I would like to give a great big shout-out to @mrsnotouching, who is my 100th follower; thanks!! We traded favors, lol. You'll have to ask her ... ;)

I thought we would do something fun (at least to me) today. Trivia!! Before you click and run, I got this question from www.schoolfamily.com; it is from the sixth grade curriculum. Easy peasy, no? OK, here is the question:

 If triangle ABC is similar to triangle DEF, what is the length of side EF?

1. 12 inches
2. 4 inches
3. 2 inches
4. 1 inches

What do you think? This is the honor system; no cheating :). Please leave your answer in the comments; I will post the answer this evening. Argh, the suspense!!! 

Are you smarter than a 6th grader?