Cell | Osmotic potential (MPa) | Pressure potential (MPa) |

A | -0.6 | 0.2 |

B | -0.5 | 0.3 |

C | -0.9 | 0.4 |

If the above cells are in direct contact with each other, than the water moves at the lowest rate between,

$\begin {array} {1 1} (1)\;C \rightarrow B & \quad (2)\;B \rightarrow C \\ (3)\;B \rightarrow A & \quad (4)\;A \rightarrow C \end {array}$