The Shannon Index of Species Diversity Is Calculated Using This

The Shannon index of species diversity is calculated using this equation: Habitat A has a total of 100 birds, with the following numbers of individuals per species: 20, 25, 20, 15, and 20.Habitat B also has 100 birds, with the following numbers of individuals per species: 80, 5, 5, 5, and 5.What is the Shannon index for habitat A?

A) 0
B) 1.59
C) 0.78
D) -0.78
E) 0.32