Observe the figures given below: After a week (Fig. 4) the weed in pot 'A? was healthy and that in pot 'B' started wilting and drying up. It shows that

• A. starch is present in the leaves.
• B. for photo synthesis, the presence of sunlight is necessary.
• C. transpiration cannot occur in absence of water.
• D. water is absorbed by roots and transported to other plant parts.