Under which conditions does a plant transpire at the fastest rate?
- Apercentage humidity 60, temperature $15^{\circ}\text{C}$
- Bpercentage humidity 60, temperature $25^{\circ}\text{C}$
- Cpercentage humidity 100, temperature $15^{\circ}\text{C}$
- Dpercentage humidity 100, temperature $25^{\circ}\text{C}$