Choose the appropriate option that rewrites the given sentence in its passive voice.<br><br> Pollution from cars and factories is contributing to changes in the environment.

A) Changes in environment from polluon from cars and factories are a contribuon. B) Changes in the environment is been contributed by polluon from cars and factories. C) Changes in the environment are being contributed by polluon from cars and factories. D) Polluon from cars and factories is contributed to changes in the environment.