Which would be the best way to

combine the following sentences

using an adjective clause?

Mr. Rapture is retiring from the chemistry lab next year. All students love him.

AMr. Rapture is retiring from the chemistry lab next year, who all students love.

BMr. Rapture, who all students love, is retiring from the chemistry lab next year.

CMr. Rapture who all students love, is retiring from the chemistry lab next year.