Keeping in Mind the Rules for Apostrophes, Which of the Following

Keeping in mind the rules for apostrophes, which of the following sentences correctly illustrates the use of personal pronouns?

A) Darryl has a new computer and uses it's features effectively.
B) Tammy likes her new home because it's farther away from the city.
C) Felicia and her mother are leaving because theres' a better opportunity elsewhere.
D) Their's is not a story you want to hear.