What kind of self defense class should I take?

I am 23 years old. I am tiny at 5%26#039;6%26quot; and 100 lbs (no, i don%26#039;t starve myself....I%26#039;m just like this naturally) so I think I need to take a self defense class! At my size, what would you recommend? I don%26#039;t want to break bones :).|||I hear good things about Krav Maga.