Shall I not . . . . . . . by you? A. help B. being helped C. be helped D. None of the above

The correct answer is C. be helped.

The sentence “Shall I not . . . . . . . by you?” is in the negative form. The negative form of the verb “help” is “be helped.” So, the correct answer is C. be helped.

The other options are incorrect because they are not in the negative form. Option A, help, is in the affirmative form. Option B, being helped, is the gerund form of the verb “help.” Option D, None of the above, is incorrect because it is not an option.