Fact 1: Some arthropods have special excretory structures. Fact 2: An ant and a lobster are both arthropods. Given the two facts above, lobsters have special structures for:?

Available choices:
(I). excretion.
(II). Cooking.
(III). produce light.
(IV). staying warm.
(V). butter.
(VI). Maine.
(VII). layers of fat.
(VIII). tastiness.
The answer is:
(I).