Which of the Following Positive Feedback Effects Is NOT a Result

Multiple Choice

Which of the following positive feedback effects is NOT a result of the thawing of the Arctic and glacial melting?

A) Melting sea ice leads to less reflectivity.
B) Melting permafrost leads to released methane gas.
C) Melting of the sea-floor results in melting of methane hydrate.
D) Melting permafrost leads to increased photosynthesis.
E) Melting glaciers leads to exposed darker rock.