Which Statement Best Describes the Value of Fungi in the Environment

Multiple Choice

Which statement best describes the value of fungi in the environment?  

A) Fungi "fix" nitrogen from the air for use by plants.
B) Fungi trap sunlight energy in the form of carbohydrates.
C) Fungi release nutrients from organic matter.
D) Fungi enrich the soil by decreasing the rate of decay of organic matter.
E) Fungi remove toxic metals from the soil.