Answer:
The right answer is, D. Yo estoy en la clase de español.
Explanation:
Because the sentence that is written correctly with the proper use of the conjugation of the verb with the subject and the body of the sentence is D.
Venga a nuestra casa is used for someone who should respect or who is elderly so this would be the right choice.
Ven a nuestra casa would be used to refer to maybe your close friends or people you can be casual with :)
