Constant enum size no matter the number of enumerated values

Question

Why is the size of an enum always 2 or 4 bytes (on a 16- or 32-bit architecture respectively), regardless of the number of enumerators in the type?

Does

Answer 1

An enum is not a structure, it's just a way of giving names to a set of integers. The size of a variable with this type is just the size of the underlying integer type.