Answer:
A.He is not concerned about it.
Step-by-step explanation:
As he didn´t went out to the porch running, but barely steps closer to take a glance at what was happening, he seems relaxed and not concerned at all with what just happened, this means that he does not care, nor is interested in learning more about it, he isn´t also disappointed that it wasn´t more excited, he just doesn´t care.