After Looking at Figure 31

Multiple Choice

After looking at Figure 31.1 above,why do you think the spike in fungal abundance ended so "abruptly"? Why didn't fungal abundance remain high?

A) As the acidity of the environment increased,fungi were not able to survive.
B) The sudden increase in carbon from the plants' mass extinction was not sustained.
C) The plants recovered and outcompeted the fungi,thereby decreasing fungal numbers.