Three statements are given followed by three conclusions numbered I, II and III. 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:

All nodes are joints.

Some joints are bones.

All bones are cartilages.

Conclusions:

I. No node is a bone.

II. All joints are cartilages.

III. Some cartilages are nodes.