Diffusion is slowest in solid particles than in particles of liquid and gases because

• A.solid particles have more kinetic energy than the particles of liquid and gases
• B.solid particles have less kinetic energy than the particles of liqiud and gases
• C.solid particles have less restriction in their movement than liquid and gas particles
• D.the particles in solids are far apart and the cohesive forces between them are negligible
• E.