WAEC Biology 1992 Question 4

Below is a list of the levels of organisation in organisms. Use it to answer questions 4 and 5
I. Tissue II. System III. Cell IV. Organ
The correct sequence of the levels in an increasing order of complexity is

1. A.I, II, III, IV
2. B.III, I, IV, II
3. C.III, IV, I, II
4. D.IV, III, I, II
5. E.IV, I, II, III