(I) In majority of plants, light saturation occurs at $\mathrm{\_\_A\_\_}$of the total sunlight available to plants.
(II) Photosynthesis process utilises $\mathrm{\_\_B\_\_}$of water absorbed by plant.

	A	B
1.	10%	1%
2.	50%	10%
3.	25%	5%
4.	10%	5%

• A

  1

• B

  2

• C

  3

• D

  4