The diagram illustrates an experiment where two separate cell surface membranes were fused to make one larger membrane. The outer face of one membrane carried protein P molecules, while the outer face of the other membrane carried protein Q molecules. The locations of the two proteins in each membrane were recorded immediately before fusion and again 1 hour later. Which statements are correct?
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only