Time of year when mentioned in a general way
The last word in a narrative sentence
Every word in a book title
Capitalization is the capital word or letter usage in sentence and writing formats. The initial letter of a word is in uppercase while others are followed by the lower case. Verbs, nouns and adjectives are generally capitalized.
A government rank when it comes before a distinct name should be capitalized.
Therefore, option A should be capitalized.
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I am confused on what you are asking, but if you are asking if that is good sentence to put in your work i believe it is a great addition to your work, although you should fix the last sentence.
c. Rules that usually work