Assume the statements are true.

Statements: No shelf is a rack. All racks are stands.

Conclusions:

I. Some shelves are stands.

II. No shelf is a stand.

Explanation

1. 01

   Shelves are kept out of the rack circle only; the stand circle is bigger, so shelves may or may not overlap it. Neither I nor II is definite.

2. 02

   The pair is a complementary Some/No pair on shelves and stands, so one of them must be true.

3. 03

   Either I or II follows.