What Is the Inherent Problem That Models Experience Concerning Fitting

What is the inherent problem that models experience concerning fitting into clothes?

A) The clothes that they are asked to wear are not their own and may not fit right on their bodies.
B) They must try on clothes that make them look too heavy and not appealing to the camera.
C) Models are subject to the age-body relationship, where clothes that once fit their prepubescent bodies no longer fit as they mature and develop.
D) Models' bodies are expected to fit all kinds of clothes for a wide variety of women, yet this is impossible given the large range of sizes that exist.