Answer:
B and C
Explanation:
When read together it says that Trudy is Micheal's sister and Micheal is Calvin's father meaning that Calvin is Trudy's nephew and Trudy is Calvin's aunt.
The word, behind, tells you where or something is in relation to something else. It also has a symbol hat is ;-)
The additional word in the sentence that should be capitalized is D. Mom.
Backstory
although it could be origen story