Which one of the following non-covalent interactions between two non-bonded atoms a and b is most sensitive to the distance between them ? (a) a and b are perma

Which one of the following non-covalent interactions between two non-bonded atoms A and B is most sensitive to the distance between them ? (A) A and B are permanent dipoles and are involved in hydrogen bonding (B) A and B are fully ionized and are involved in salt bridge formation (C) A and B are uncharged and repel each other (D) A and B are uncharged and attract each other