The subject-verb agreement rule for 'either...or' and 'neither... nor' says that the verb will agree with the subject that is closest to it. The proximity of the subject to the verb is the only thing that matters when it's a question of 'either...or' or 'neither ...nor'.

Since the verb 'are' agrees with the subject 'you', the sentence is grammatically correct and does not require any change. 

Options A, B and C are incorrect because the sentence is grammatically correct and does not require any change. Also, in standard English we don't use 'you am' or 'you is'. The given sentence is in the simple present tense and 'will be' is used for the future continuous tense