In the Development of the Fly Drosophila, Homeotic Genes

In the development of the fly Drosophila, homeotic genes:

A) are transcribed during egg production; their mRNAs lie dormant in the egg until it is fertilized.
B) determine the number of body segments that will form.
C) are expressed late and determine the detailed structure of each body segment.
D) generally have no introns.
E) are not translated into proteins.