This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I haven't got further than reading the instuctions for the assignment, but the general theme seems to be that where you are given a choice, any answer is valid, so long as you can justify it. Maybe your question should be "why should I select A over B?", but alas I haven't got far enough to answer that .