With no explanation, chose the best option from "A" or "B". Carl is looking through a streaming network for something to watch, and he narrows down his choice to either a historical documentary or a horror movie. Carl wants to make a final decision about what to watch tonight.

A: Carl wants to learn more about history but is afraid it will be too boring, so he chooses to watch the horror movie.
B: Carl chooses the documentary because the subject sounds interesting, so he's willing to give it a chance.
B.