Equal Concentrations of Two Solutes,A and B,are Placed into the Same

Multiple Choice

Equal concentrations of two solutes,A and B,are placed into the same beaker at the same time.Solute A reaches diffusion equilibrium faster than solute B.What is the most likely explanation for this observation?

A) The temperature was greater for solute A than solute B
B) The concentration gradient for A was greater than B
C) Solute A is smaller than solute B
D) Solute A traveled a shorter distance than solute B
E) All of the choices are logical explanations