Match List I with List II.

List 1

1. A. Intrinsic Semiconductor

2. B. n-type semiconductor

3. C. p-type semiconductor

4. D. Metals

List 2

1. I. Fermi-level near conduction band

2. II. Fermi-level at middle

3. III. Fermi-level near valence band

4. IV. Fermi-level inside conduction band