Vida's cousin was staying in her room Vida wanted the room to herself. How should the run-on sentence above BEST be written?

Vida's cousin was staying in her room, Vida wanted the room to herself.
Vida's cousin, was staying in her room, but wanted the room to herself.
Vida's cousin was staying in her room, but Vida wanted the room to herself.
Vida's cousin was staying, in her room, but Vida, wanted the room to herself.

c

Explanation:

Vida's cousin was staying in her room, but Vida wanted the room to herself.

it doesn't misuse commas.

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i think cheerleading is definitely a form of art. or at least it should be! not everyone has what is takes/and or the determination to become a cheerleader. it takes practice and hard work, along with being able to master a move correctly, like dancing. dancing is a form of art, and i think cheerleading is too. not everyone can dance, just like not everyone can be a cheerleader.