Why has industry historically produced in large lots?
a. marketing prefers large lots, and marketing is generally powerful
b. Interest is a dominant component of carry cost, which makes large lots economical
c. Setup time has been typically considered as a given, not easy to change
d. Industry has had a preference for fewer models, and therefore larger quantities per year and larger lots per order make sense.
D) Industry has had a preference for fewer models, and ...
Rational given in a sentence.