Which of the following sentences includes a nonrestrictive clause?

A. Rhaven, who lives down the hall, has a problem with her loud next-door neighbor.
B. The cat that Linh took in off the street changed her life for the better.
C. The charity work that Elvis did was often overlooked by the media.
D. Xander painted a mural and it got him a lot of positive attention.

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What is the best definition of a restrictive clause?

A. A clause that adds details within a sentence with the use of a relative pronoun
B. A clause not set apart by commas, not necessary to the meaning of the sentence
C. A clause not set apart by commas, necessary to the meaning of the sentence
D. A clause set apart by commas, not necessary to the meaning of the sentence

Need help with both questions plss