What is the order of the following evolutionary landmarks (A to D), from the oldest to the most recent? Your answer would be a four-letter string composed of letters A to D, with the oldest event on the left.
A. Divergence of human and bird lineages
B. Divergence of human and chimpanzee lineages
C. Divergence of A. thaliana lineage from the conifers lineage
D. Divergence of fish and insect lineages