Which one of the following are analogous structures?

The central idea of biological evolution is that all life on earth shares a common ancestry and some similarities have evolved in other ways. These are called homologies and analogies. The term analogy refers to the similarity in function of two different organisms due to convergent evolution and not common ancestry. An example of an analogous trait would be the wings of insects, bats, and birds that evolved independently in each lineage separately after diverging from an ancestor without wings. The wings of insects originate from the inner or outer surface of the insect’s body. Feathers of birds originate from their forelimbs, and the wings of bats also originate from both the forelimb and the membranous skin of the abdomen. Gills of prawn and gills of fish are analogous structures; the function of gills in both of the aquatic animals is the same but they have different origins. So both A and B are correct.