Three statements are given, followed by four conclusions numbered I, II, Ill and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:
Some trees are leaves.
Some leaves are flowers.
Some flowers are branches.

Conclusions:
I. Some trees are flowers.
II. Some leaves are branches.
III. Some branches are flowers.
IV. Some branches are leaves.