What Is the Correct Sequence of Organisms If a Community

Multiple Choice

What is the correct sequence of organisms if a community is going through secondary succession?
A. grasses establish themselves in the community
B. shrubs establish themselves in the community
C. soil formation occurs
D. trees establish themselves in the community

A) a - b - d
B) c - a - b - d
C) d - c - a - b
D) c - a - d
E) a - c - b