Vidals teacher points out a group of trees in a local forest preserve. within the group of trees there are pine trees, oak trees, and some maple trees. they vary in age, with some of the trees being hundreds of years old, while others are only about 80 years old, and a small group of trees were only planted about 5 years ago. would this group of trees be considered part of a stand?

a yes, to be considered a stand the group of trees must be of different size, species, and age.
b no, to be considered a stand the group of trees must be of similar size, species, and age.
c yes, to be considered a stand of trees, at least a quarter of the trees must be 100 years in age or older.
d no, to be considered a stand, none of the trees can be older than 80 years. mark this and return