Given below are two statements.
Statement I: Engelmann conducted spectrum experiments by using Cladophora and aerobic bacteria.
Statement II: Plants use light energy to prepare carbohydrates from CO₂ and water.
In light of the above statements, choose the correct answer from the options given below.

The Engelmann experiment provided early evidence for the existence of photosynthetic pigments, particularly chlorophyll, which absorb light energy for photosynthesis. Light energy is essential for the preparation of starch through the process of photosynthesis. During photosynthesis, plants and certain algae use light energy to convert carbon dioxide (CO₂) and water (H₂O) into glucose (a simple sugar) and oxygen (O₂).