Under Stress,a Community Loses a Number of Species

Multiple Choice

Under stress,a community loses a number of species.When the stress is removed,the species composition recovers and then stabilizes.During this process,what will be the most likely effect on net primary productivity?

A) It will increase.
B) It will decrease.
C) It will be unaffected.
D) It will increase and then stabilize.
E) It will decrease,recover,and then stabilize.