C) Steve and Sally asked Mike and I out for dinner
Explanation:
It is grammatically wrong to use the subjective case pronoun "I" after a verb (asked) especially if you consider omitting "Mike and". It would be more suitable and grammatically correct to replace the subjective case pronoun "I" to the objective case pronoun "me".
Therefore, given current trends in modern usage, option C Steve and Sally asked Mike and I out for dinner is always INCORRECT?