Which is an appropriate way to note the topic sentence of a paragraph on an outline?

B. This will save you valuable advertising dollars.
1. This form of advertising is nearly half the cost of distributing flyers as the game, as you did last year.
III. Your company's name on a large sign in the outfield will save your company valuable advertising dollars.
I. Topic Sentence
i. Support for Topic Sentence
none of the above

Question

Which is an appropriate way to note the topic sentence of a paragraph on an outline?

B. This will save you valuable advertising dollars.
1. This form of advertising is nearly half the cost of distributing flyers as the game, as you did last year.
III. Your company's name on a large sign in the outfield will save your company valuable advertising dollars.
I. Topic Sentence
i.	Support for Topic Sentence
none of the above