Dialysis (Visking) tubing is a man-made partially permeable membrane with pores of around $2.5\,\text{nm}$. Glucose molecules are about $1.5\,\text{nm}$ in diameter, so they are able to move through the membrane pores. What else is able to pass through the pores?
- A1 and 3
- B2 and 4
- C2 only
- D4 only