Approximately 1% of the Solar Radiation That Strikes a Plant

Approximately 1% of the solar radiation that strikes a plant is converted into the chemical bond energy of sugars.Why is this amount so low?

A) Approximately 99% of the incoming solar radiation is converted to heat energy.
B) Only 1% of visible light wavelengths are absorbed by photosynthetic pigments.
C) 50% of the sun's energy strikes large bodies of water and barren land surfaces.
D) 99% of the solar radiation is reflected,absorbed,or scattered in the atmosphere.
E) Only the green wavelengths of light are absorbed by plants for photosynthesis.