Correct option is B
London dispersion forces that arise from transient dipoles in atoms that induce transient dipoles in nearby atoms, produce an attractive force, and are significant only over short distances (~500 pm) are called London dispersion forces, also known as van der Waals forces.
London dispersion forces are a type of intermolecular force that results from temporary fluctuations in electron density around an atom or molecule. These fluctuations create instantaneous dipoles that can induce complementary dipoles in neighboring atoms or molecules, leading to an attractive force between them.
These forces are always attractive and interaction energy is inversely proportional to the sixth power of the distance between two interacting particles (i.e., 1/r 6 where r is the distance between two particles)