Over the Past Several Years General Motors (GM),like Other Auto

Over the past several years General Motors (GM) ,like other auto manufacturers,has introduced many new models of sport utility vehicles (SUVs) in all its major divisions.This proliferation of SUVs and an increase in gasoline prices have caused sales to level off.In response,GM offered rebates of up to $5,000 or no-interest financing on selected models of SUVs.The largest rebates went to current owners of GM vehicles,so that they would replace their current vehicles with a GM model instead of switching to another brand.The rebates have been heavily advertised on national television.Profit margins per vehicle have shrunk as a result of these costly promotions.In which stage of the product life cycle is GM currently operating?

A) market establishment
B) market introduction
C) market growth
D) market maturity
E) sales decline