State and County Fairs Are an Annual Autumn Event in Most

State and county fairs are an annual autumn event in most states. Attendance for such events has been gradually declining because people are tired of seeing the same events and rides every year. Fairs that add a series of concerts to the usual fair menu have engaged in:

A) life cycle management.
B) brand mix expansion.
C) trading up.
D) product line diversification.
E) product contraction.