SAT II Biology: E or M?

<p>I am leaning towards Ecology because it is mainly common sense and there are very few topics. Is this a good choice? Also, I am having a ton of trouble with my sparknotes book. It gives be a letter answer with a completely different explanation that doesn't match the answer. Is this a probelm with them?</p>

<p>I seem to remember reading that Sparknotes is notorious for mistakes.</p>