The diagram depicts a plant cell. The cell has been stained using iodine solution. Once the iodine solution has been applied, what colours would the cell wall and the starch grain be?
- Acell wall: blue-black; starch grain: blue-black
- Bcell wall: blue-black; starch grain: orange-brown
- Ccell wall: orange-brown; starch grain: blue-black
- Dcell wall: orange-brown; starch grain: orange-brown