According to the passage, which of the following is NOT true?
A.
Exhibits in a natural history museum have to be enlarged up to seventy-four times.
B.
An art museum buys its exhibits while a natural museum often has to construct its exhibits.
C.
Models are displayed to show the insects' development and the workings of their bodies.
D.
Photographs and measurements are taken of animals so as to make the model appear more realistic.