Write the next sentence in the following story.

How to understand tv ratings
Be aware of what the tv-y rating entails.
It signifies a program that is directed to all children, but is also for a general audience.
Understand what the tv-y7 rating signifies.

Select from:
[a]. This indicates a program that is directed to all children, but is unlike certain programs. Know what the tv-y7 rating signifies.
[b]. This rating signifies a program that is directed toward older children who are aged 7 and above...there is a sub-rating for fantasy violence, called tv-y7-fv. Understand that the tv-g rating signifies a program for general audiences.
[c]. It indicates the program that there are ratings, and can be obtained from people working on the network or even buying on tv-as well as reading it. Don't be surprised by the tv-y11 rating-just because it is labeled a station rather than a tv network ranking does not mean it represents the standard rating.
[d]. According to the american federation of television or the american academy of television ratings, you raise your ratings to around 30% of your ratings. Understand what the tv-y7 rating subtensures about you as a person.. The answer should be
[b].