Task: Class Definition Understanding (ontology: Earth_Environment/EnvironmentOntology)

Which of the following definitions best describes 'body external integument structure'?

A. Dermal, epidermal, glandular and pigment structures of the external head integument.
B. Dermal, epidermal, glandular and pigment structures of the body integument.
C. A freshwater ecosystem which has its functions and composition determined by a freshwater lake.
D. A warm-core cyclone which occurs in the middle and high latitudes, primarily drawing energy from horizontal temperature contrasts between atmospheric fronts.

Answer: Dermal, epidermal, glandular and pigment structures of the body integument.