Which sentence should be revised to include commas to set off a nonrestrictive element

Here are the sentences (I don't know the answer)

Explanation:

A. The car in my driveway belongs to my oldest sister.

B. The game that my mom gave me is really fun to play.

C. The tree in front of my house has been there for a century.

D. The tv show which we watch together airs on Friday nights.

it the character ahdfg gsytriw   errtywer erwqtydfgb gwty

the underline word is basically like a prepositional phrase.