If a cell `A` with `DPD=5` bars is connected to cells `B,C` and `D` whose `OP` and `TP`are respectively `5` and `5,10` and `4` and `8` and `3` the flow of water will be

Options

A. B to A,C,D
B. A to D,B,C
C. C to A,B,D
D. A to B,C,D

Answer

To solve the problem, we need to analyze the given data about the cells A, B, C, and D and calculate their respective Diffusion Pressure Deficit (DPD). Then, we will determine the direction of water flow based on the DPD values.

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Cell A: DPD = 5 bars
- Cell B: OP = 5 bars, TP = 5 bars
- Cell C: OP = 10 bars, TP = 4 bars
- Cell D: OP = 8 bars, TP = 3 bars

2. **Calculate DPD for Each Cell:**
- **Cell B:**
- DPD = OP - TP = 5 - 5 = 0 bars
- **Cell C:**
- DPD = OP - TP = 10 - 4 = 6 bars
- **Cell D:**
- DPD = OP - TP = 8 - 3 = 5 bars

3. **Summarize DPD Values:**
- Cell A: DPD = 5 bars
- Cell B: DPD = 0 bars
- Cell C: DPD = 6 bars
- Cell D: DPD = 5 bars

4. **Determine the Direction of Water Flow:**
- Water moves from areas of lower DPD to areas of higher DPD.
- The DPD values are as follows:
- Cell B (0 bars) < Cell A (5 bars) = Cell D (5 bars) < Cell C (6 bars)
- Therefore, the flow of water will be from Cell B (lowest DPD) to Cell A, Cell D, and Cell C (higher DPD).

5. **Conclusion:**
- The flow of water will be from Cell B to Cells A, C, and D.

### Final Answer:
The flow of water will be from **B to A, C, and D**.

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